Plain raw kefir, in Aajonus's framework, is one of the most therapeutically valuable fermented dairy foods available on the Primal Diet, and it holds a central place in his daily eating practice. He stated directly that 95% of the milk he consumed was in the form of kefir, not fresh raw milk, because he personally had a digestive challenge given to him by doctors, and fermentation resolved it. He preferred fermented milk almost categorically over fresh cold milk, saying he would not drink raw milk cold, and that he preferred it fermented.

Kefir is defined as milk that has been predigested by bacillus cultures, similar to yogurt in that regard, but substantially different in process, temperature, and resulting nutritional quality. The fat, lactose, and protein in raw plain kefir have all been predigested by the bacillus cultures, making them available for easy digestion, assimilation, and utilization in the human body. This predigestion is the defining therapeutic advantage of kefir over fresh cold milk.

The word "kefir" as Aajonus uses it refers specifically to raw, unheated, naturally fermented milk, never to pasteurized, flavored, thickened, or commercially produced kefir. He considered commercial kefir products to be inferior foods, and commercially cultured kefir grains to be a distortion of the natural bacterial process that can actually interfere with the development of the drinker's own intestinal bacteria.

Kefir made from both cow's milk and goat's milk appears in his teaching, with specific differentiation between the two animals' milks based on the hormonal and nutritional character of each species, discussed in detail below.

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The core mechanism by which kefir works, according to Aajonus, is predigestion. The bacillus cultures in naturally fermented milk break down the three primary components of milk, fat, lactose (milk sugar), and protein, before the liquid ever enters the human digestive tract. He described this as making the milk "mostly predigested," and stated that kefir improves general digestion as a result.

He named specific bacterial actors and their functions within kefir: - Acidophilus breaks down milk sugar (lactate), effectively taking the place of lactase when that enzyme is absent in the human body. - Bulgarius (bulgaris) breaks down the fats. He noted that if there is not enough fat present when the bulgaris is active, the enzyme dies in the milk, which is why some kefir producers add raw cream to whole milk before culturing. - Carcassicus breaks down the protein.

He acknowledged that this bacterial division of labor is beneficial, especially for people who cook most of their food and have no functional bacterial cultures of their own, but he emphasized that it is substantially better when the body uses its own bacteria rather than externally cultured bacterial strains, because external cultures do not break down milk the same way that bacteria indigenous to the human body would.

Aajonus made a crucial and specific distinction regarding different types of bacterial starters used in kefir:

When commercially grown kefir grains are used (grains that have been washed and cultivated many times, far removed from their natural origin), the resulting kefir will improve the drinker's general health, because the byproducts of the fermentation process are already predigested nutrients that the body can absorb, but it will always interfere with the drinker's own bacteria and will never improve digestion itself. He stated this plainly: "It will improve your health but you will not improve your digestion."

Conversely, when kefir is made using the milk's own natural bacteria (encouraged by the addition of honey), or made using the drinker's own saliva, it will both improve general health and progressively improve the drinker's own intestinal bacterial environment and digestive capacity. This is why he pushed strongly for people to make their own kefir with their own spit, rather than relying on manufactured kefir grain starters.

He issued an important caution about milk's sugar content when considering kefir as a meal replacement or complement to protein: "Just remember that milk is not high in protein. It's high in milk sugars. So you have a high sugar level. It's going to make the brain the neurolog, " (the transcript cuts here, but the implication is neurological overstimulation or blood sugar effects). He specifically noted this in the context of someone asking whether kefir is a good alternative to meat in the morning, pairing it with six raw eggs and two tablespoons of honey.

Aajonus differentiated sharply between goat's milk and cow's milk based on the constitutional effects on the human body:

• Goat's milk contains adrenal and hormone precursors. He noted that goats are characteristically hyperactive and thin, you will never see a fat goat unless it has been fed garbage in a feedlot. Goats are perpetually energized, eating everything including bark and nails. Therefore, goat's milk (and goat kefir) is better suited for people who are overweight and have low energy, or who have diabetes. He said plainly: "If somebody's fat and has diabetes, goat milk is better."

• Cow's milk is more appropriate for people who are thin and hyperactive, because it does not carry the adrenal stimulants that goat's milk does. A thin, hyperactive person who drinks goat's milk will be driven further toward imbalance. He also noted that sheep's milk has a high rate of linoleic acid (lanolin), a different consideration.

• He further noted that goat's milk "goes right through you," which people misinterpret as being "more digestible." He clarified: "It doesn't mean it's more digestible. If it were more digestible, people would be getting healthier and calmer. But people who are thin and eating it and not getting calmer, it isn't" [serving them].

He made a particularly important biological argument regarding the bacteria naturally present in cow's milk: the bacteria in cow's milk, as it exists in its raw, natural state, is designed to help the calf make alkalinizing cells for an alkaline intestinal tract. Cows have alkaline intestinal tracts. Humans have acid intestinal tracts. Therefore, using bacteria that originates from the cow (even good bacteria from raw milk) counteracts a healthy human digestive environment. This is precisely why he recommended making kefir using the drinker's own spit, so that the fermentation is driven by bacteria suited to the human acid-digestive environment, not the cow's alkaline one.

Aajonus noted that when milk drops below 76 degrees Fahrenheit, it begins losing its growth factors. He said he loved to get milk fresh and warm directly from the cow, and to keep it above 76 degrees for as long as possible. If fermentation progressed too far into heavy kefir under those conditions, he would blend it and drink it or feed it to pigs or someone else. But he maintained that the more he could consume milk fresh and warm, without refrigeration, the better it was for preserving growth factors. Refrigerated dairy, while still beneficial, does not retain the full profile of growth factors that warm-kept milk does.

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The single most critical distinction for kefir is that it must be made from raw milk, never heated. Aajonus described the temperature boundary precisely:

• Raw plain kefir can be made without heat above a cow's body temperature (about 100–101°F). This is the upper limit for kefir.
• Yogurt, by contrast, requires heating to at least 112°F to begin thickening, and most yogurts require at least 115°F. Some are made from pasteurized milk and heated even higher.
• The distinction is: kefir is thinner than yogurt because it does not require temperatures that destroy enzymes and bacteria.

Pasteurized kefir, i.e., kefir made from pasteurized milk, or kefir that has been heated after fermentation, is disqualified entirely. He stated flatly: "All processed stuff. No." In his view, pasteurized kefir is not a real food.

He specifically stated: "Kefir is healthier when not thickened with gelatin." Commercial kefir is often thickened with gelatin, which he considered a degradation of the product. Raw plain kefir should be naturally thin, reflecting its fermentation without high-heat processing.

Flavored kefir is flavored with concentrates, and he stated that concentrates destroy much of the nutritive value of raw kefir, even when those concentrates are made from fruit only. Commercial flavored kefir is therefore considered inferior. Fresh raw fruit blended directly into raw kefir is the only acceptable way to flavor it, with the caveats described in the culinary applications section.

When milk is allowed to ferment naturally, without starters, it pre-digests. He said: "Nothing wrong with it. It doesn't putrefy unless you cook it." The souring of milk is a natural process driven by the bacteria indigenous to the milk and the environment, not a sign of spoilage. Only cooking causes true putrefaction.

He described a spectrum from fresh warm milk to kefir: milk naturally transitions to kefir when left out. If it gets "too heavy" in fermentation, he described it as something he might blend and drink, or feed to pigs.

He observed raw dairy at a dairy in Thailand that maintained milk at exactly cow's body temperature, approximately 101°F, with air circulation through a special vat. He described this as an ideal form of storage for fresh raw milk, and contrasted it with refrigeration (which kills growth factors) and overheating (which destroys bacterial and enzymatic activity).

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Aajonus's preferred method for making kefir at home without starters or spit is to use raw honey to encourage the natural bacteria already present in the raw milk. His precise protocol:

1. Take one to two tablespoons of raw, unheated honey per quart of milk, or two tablespoons per half gallon (he formerly used two tablespoons per quart but found it got too sweet over time, so he adjusted to two tablespoons per half gallon). 2. Because honey does not mix well into cold milk, he would blend approximately six ounces of milk with two tablespoons of honey in a blender, just enough to incorporate the honey, then add this blended mixture back into the remaining milk. 3. Leave the jar out of direct light, at room temperature. He specified that if the room temperature is approximately 80°F, the milk will be ready as kefir in 24 hours. 4. At cooler temperatures, it takes longer. 5. The milk can also simply be left with one to two tablespoons of honey per quart, shaken, and left to sit, "it'll turn into a natural kefir on its own." 6. Store in a glass jar, and keep it out of light. He recommended keeping the jar covered and out of light so it does not go bitter.

The method Aajonus advocated most strongly was the use of the drinker's own saliva:

"Put a teaspoon of your own saliva into a quart of milk, you will make kefir perfectly designed with the probiotics for your body. Not for someone else to drink."

His rationale: the primary function of saliva is to add bacteria that will digest animal products in the human body. The bacteria in the mouth are perfectly suited to break down animal-origin foods, including milk, in the human digestive tract. When those bacteria are introduced into the milk, they ferment it in a way that is specifically calibrated to that individual's digestive needs.

His enhanced version of the spit method: 1. Put some honey in the mouth along with a little bit of milk. 2. Swish it around thoroughly to collect as much bacteria from the mouth as possible into the liquid. 3. When the mouth is as full as it can hold, expectorate (spit out) all of it into the quart of milk. 4. This produces kefir in 24 hours at 80°F room temperature.

He contrasted this with the community-style method: "If you want to make community kefir with probiotics, then you'll put a teaspoon or a tablespoon of honey, raw unheated honey in it, and you leave it out." The honey-only method makes kefir appropriate for general consumption (a whole group), while the spit method makes kefir specifically tailored to one person's biology.

He framed the spit method as ancient practice: "They've been doing that for thousands of years."

He also referenced an ancient practice of rubbing the infant's saliva, urine, or feces on the udder of the cow to make the milk immediately compatible with the infant, then placing the milk on the infant's mouth, with recovery beginning within an hour or two and full eating resuming within 24 hours. This reinforces his belief in individually matched bacterial cultures.

He had his farmer not refrigerate the milk at all, keeping it warm, never chilled, so that it would go into kefir faster. He stated: "All of my kefir was in two days." (This was without the spit or honey method, just natural warm fermentation.)

With spit and 80°F room temperature, kefir is ready in 24 hours.

He made a specific environmental observation about the surface on which fermenting kefir is placed:

• Wood surfaces (wood floors, wood tables): bacteria multiply faster, fermentation is faster, and the resulting kefir tastes better. He compared this to wine and vinegar makers who age everything in wood, the wood fundamentally changes the character of bacterial fermentation.
• Formica or plastic surfaces: "cold energy", bacteria will not multiply on these. Fermentation is slow or impaired.
• Concrete or tile: bacteria grows slowly on these surfaces as well.
• Glass jar: acceptable for storage, but for active fermentation, proximity to wood surfaces accelerates and improves the process.

He confirmed this with a personal anecdote: someone who hated kefir tasted his naturally fermented version (made correctly, on wood, with natural bacterial cultures) and said, "Oh my god, this is a whole different taste."

He was emphatic that store-bought milk, even from health food stores, is unsuitable for making kefir:

• Regular supermarket milk has kerosene derivatives and processing chemicals that contaminate it. "It's not even milk. Not anything like it."
• Even "organic" milk sold in stores often involves pasteurization, homogenization, plastic containers, and improper feeding of the source animals.
• He did not drink the raw milk sold in California stores (which he had fought to legalize) because it was sold in plastic containers and the feeding of the source animals was not what he required.
• He had a truck come weekly from Amos (in Pennsylvania) delivering milk produced exactly as he specified, shipping it across the country.
• Amish farmers, Mennonite farmers, and similar small-scale operations were his recommended sources.

He mentioned going to the Kinnikin Dairy (or a sustainable settings dairy) as an example of where good raw milk for kefir could be obtained.

He noted that oxygen causes milk to sour more quickly. If you want faster fermentation, leave the jar open or loosely covered. If you want to slow fermentation, seal it airtight. He confirmed keeping jars covered (yes, tight, airtight) will slow the process, but the milk will still eventually sour.

When kefir fermented too heavily, past the desired state, he described feeding it to pigs, who "loved it." He mentioned observing this at an Amish farmer's operation, where the pigs received all the discarded milk that had gone "a little too fermented to turn it into good kefir or yogurt."

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The most direct and documented pairing for kefir is raw, unheated honey. Honey serves multiple functions:

1. Digestibility enhancement: "Blending or mixing in some unheated honey increases digestibility." 2. Bacterial encouragement: Honey feeds the bacteria in the milk, encouraging natural fermentation without interfering starter cultures. 3. Flavor balancing: Without honey, naturally fermented kefir may be too sour for some people. 4. Mineral availability: He noted that having kefir "soon after the honey/butter mixture" is best "for the minerals", indicating that the kefir helps deliver and assimilate minerals when timed appropriately after fat and honey intake.

The honey used must be raw and unheated, any heated honey loses the enzymes and compounds that make it functional in this context.

From the early training transcripts: when kefir grains are used, raw cream is often added back to the milk before culturing, because whole milk as sold commercially is effectively skimmed. The bulgaris enzyme that breaks down fat in the fermentation process will die if insufficient fat is present. Therefore, sufficient fat must be present in the milk being fermented, either by using genuinely whole raw milk (not separated) or by adding raw cream.

This also relates to Aajonus's general framework that dairy fat is necessary to digest the minerals in dairy.

He stated: "If you blend or mix fruit with kefir, you should not drink it within an hour of eating beef, lamb, venison, and other red meat." This is a specific contraindication for the fruit-kefir combination, not for plain kefir itself, the timing restriction applies when fruit is added.

He documented the following timing sequence: "It is best to have kefir soon after the honey/butter mixture, for the minerals." This places kefir in a supporting role following a honey-and-butter combination, suggesting the fat and sugar from the preceding combination help facilitate mineral absorption from the kefir.

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The source passages do not document any topical external application of kefir specifically. The honey/butter topical protocol is documented (applied to skin, covered with raw beef, then a damp cloth, then plastic, then an Ace bandage for 7–12 hours), and kefir is mentioned as something to take internally soon after the honey/butter mixture, but this is an internal timing recommendation, not a topical application of kefir itself.

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He stated that 95% of the milk he consumed was kefir, not fresh milk. This establishes kefir as essentially his primary form of dairy intake, consumed daily and in substantial quantity.

He mentioned that even his meat he liked "a little off", reflecting that his entire dietary approach was tilted toward fermented, pre-digested foods, with kefir as the dairy-world expression of this preference.

The documented morning formula (when meat is unavailable): half a cup of kefir, six raw eggs, two tablespoons of honey. This is presented as a replacement meal, not an addition to meat.

He warned about milk that goes into "too heavy kefir", if it ferments too long and becomes very thick, he would blend it and drink it. He associated overly fermented dairy with "swelling," which he wanted to avoid. This suggests there is an optimal window of fermentation, not too light (still mostly milk) and not too heavy (excessively thick, causing inflammation or swelling in his experience).

Milk kept above 76°F retains growth factors. Below 76°F, growth factors begin to decline. For maximum therapeutic value, both the source milk and the finished kefir should be maintained above this temperature as long as feasible, though he acknowledged that practical circumstances (shipping, storage) often make refrigeration necessary.

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The simplest preparation: raw kefir blended or mixed with unheated honey. The honey increases digestibility and provides pleasant flavor. No specific quantities given for this purpose beyond the general fermentation formula (one to two tablespoons per quart).

Raw unripe fruit may be blended with kefir, with the following caveats: - Not recommended for people who suffer from pain. - Do not consume within one hour of eating beef, lamb, venison, or other red meat. - Kiwi fruit must never be blended with kefir. - Honey may also be blended in at the same time.

He described this preparation as a flavoring method for plain raw kefir, an alternative to the concentrate-based flavorings used in commercial products.

He documented the combination of half a cup of kefir, six raw eggs, and two tablespoons of honey as a practical morning meal when raw meat is unavailable. This is a complete meal in his framework, though he noted the high sugar content from the milk.

After consuming a honey-and-butter combination (for mineral work), kefir is taken soon after to maximize mineral absorption. No specific quantities are given for the kefir in this sequence.

He described his personal procedure as follows: 1. Put honey in the mouth with a small amount of milk. 2. Swish it thoroughly, collecting all bacteria from the mouth. 3. Expectorate into the milk when the mouth is as full as possible. 4. Keep at 80°F room temperature. 5. Ready in 24 hours.

He described the result as "an exquisite kefir", fundamentally different in taste and biological quality from grain-cultured commercial kefir, in the same way that wood-aged wine or vinegar is categorically different from industrially produced versions.

When asked whether the jar should be covered: yes, covered. Tight, airtight. Oxygen causes faster souring. If faster souring is desired, leave it open. If you want to slow fermentation, seal the jar. Keep it out of light and not too cold, "don't get it too cold. It will be very temperamental."

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Aajonus documented yogurt as a derivative form of kefir-type fermented milk, but with critical differences:

• Yogurt is always made with heated milk and will not thicken unless milk is heated to at least 115°F.
• Most store-bought yogurt is made from pasteurized milk and is an inferior food.
• Raw kefir is "considerably superior" to yogurt.
• Yogurt is thicker because of higher fermentation temperatures, but those temperatures destroy beneficial compounds.

The key takeaway: kefir and yogurt are both predigested milks, but kefir, being made below cow's body temperature (~100–101°F), preserves everything that yogurt's higher heat destroys.

He discussed the option of making kefir with commercial kefir grains and summarized their properties: - They have been washed and cultivated so many times they no longer resemble their natural form. - They are "a hybrid substance" with no natural relationship to either the bacteria in milk or in human intestines. - Appropriate only for people who want general nutritional benefit without optimizing their own digestion. - People who want to transform their intestinal bacterial environment must use natural honey or spit methods instead.

Sometimes kefir grains can be made from actual grains (plant-based fermentation starters), which he acknowledged briefly: "Sometimes you can make a kefir grain out of grains. You can cause a bacteria fermentation...", though this was not elaborated upon in the extracted passages as a practical recommendation.

In the cheese-making process described in the recipe book, whey is documented as a byproduct of strained kefir/yogurt-type preparations. He recommended using whey to pickle, in place of raw vinegar for sauces and spices, or diluted with five parts water as a plant fertilizer. This reflects the principle of wasting nothing from properly fermented dairy.

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Aajonus rooted the spit-kefir method in thousands of years of human practice. He stated people "used to" inoculate milk with saliva, urine, or fecal matter from infants to make it compatible with that specific baby. This was not a fringe practice but a widespread, understood technology for infant recovery and milk adaptation.

His argument that cow bacteria is designed for alkaline intestines, not human acid intestines, is a foundational biological-political argument: the entire commercial probiotic and cultured dairy industry is built on the premise that cow-origin bacteria helps humans. Aajonus argued the opposite, that industrially cultured cow-origin bacteria actively interferes with the human acid digestive environment, and this is never acknowledged or disclosed by the food industry.

He documented that all yogurt and kefir sold in stores is pasteurized, making them, in his assessment, non-foods. The pasteurization of milk before fermentation, or pasteurization of the fermented product afterward, destroys the very bacterial and enzymatic activity that makes fermented milk valuable. The resulting commercial product retains some nutritional value from the fermentation byproducts, but loses the living bacterial component that drives digestive improvement.

He documented that farmers are now required to put chlorine in milk to reduce bacterial counts (specifically coliform bacteria). He stated: "I don't want chlorine in my milk." This regulatory pressure is part of why he sourced milk exclusively from small Amish and Mennonite farmers, avoiding any commercially processed milk stream.

Even the raw milk he fought to legalize for California store shelves was sold in plastic containers, which he considered unacceptable for his own consumption. He would not drink it. He specifically required milk shipped from Amos (in Pennsylvania) in proper containers, to his own specifications. Plastic is a "cold energy" that interferes with bacterial activity, consistent with his observation that formica and plastic surfaces slow fermentation.

He specifically addressed the widespread belief that goat's milk is "more digestible" than cow's milk. His counter: "Sure. It goes right through you. It doesn't mean it's more digestible." Rapid transit is not digestion. If goat milk were truly more digestible in the beneficial sense, thin, nervous people who drink it would be getting healthier and calmer, and they are not. The marketing claim of goat milk digestibility is, in his framework, a simplification that misleads people toward a food that may be harmful for their constitutional type.

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