Saru-region rice and egg-millet tonoto

A grain drink made for the kamuy

Tonoto is an Ainu grain drink made for ceremonial occasions and offered to kamuy, the spirits or deities addressed in Ainu practice. The Saru River account describes one community preparation: rice and egg millet are cooked together, mixed with malted rice, fermented in a keg and strained. It identifies no alcohol strength, final acidity, or tasting profile, so those details should not be supplied as if they were fixed properties of every tonoto.

The recipe belongs to a living and varied food culture. The Hokkaido Regional Agricultural Administration Office describes tonoto as an important offering at kamuy-nomi and ancestral rites, and notes that preparation is a significant women's responsibility accompanied by words of prayer to Apefuchi Kamuy, the fire deity. That is broader Ainu context; the FAO chapter records the practices of the Saru River preservation group and should remain the authority for this particular formula.

A modern brewery has also recreated a product called Kamuy Tonoto through documentary research, trial batches and consultation in Shiraoi. Tanaka Sake Brewing describes a different method using rice koji and yeast with millet, then adding millet amazake for body. That useful comparison shows the name and cultural role continuing into the present; it is a separate formulation and should not be substituted for the Saru River preparation recorded here. The brewer describes its own product as mildly tart and sweet with a thick mouthfeel, but those tasting notes belong to that modern version.

The National Ainu Museum's Saru-dialect archive records another layer of the name: one dictionary glosses tó noto as sake, including cloudy or unstrained sake, and notes a broader contemporary use for alcoholic drinks generally. It also records millet as the former grain. This is lexical evidence, not a process rule for every tonoto. The FAO account remains specific about the Saru preparation: it describes straining the drink before serving. Keeping the dictionary's range beside that local method prevents either description from standing in for all Ainu drink-making.

Saru River and the changing grain base

The method comes from a food-culture project in the Saru River region of Hokkaido. In Biratori, members of a local Ainu food-culture preservation group interviewed elders and prepared familiar dishes for community gatherings. The chapter records tonoto made for a boat-launch ceremony in August 2006. It does not claim to establish when tonoto began or where the drink originated; the earliest period remains unknown.

The Saru account describes a shift in the grain bowl. Barnyard millet, piyapa, was once the principal grain for tonoto, while rice became more common and millet growing declined. The account says people now add barnyard millet, egg millet or foxtail millet to rice to recover an older flavour. Sticky egg millet, ritensipuskep, is the usual choice in the described community because it is easiest to obtain. These are not interchangeable names for a single grain: contemporary food studies identify barnyard millet as Echinochloa crus-galli, foxtail millet as Setaria italica, and egg or proso millet as Panicum miliaceum.

This history sits within broader Ainu subsistence and exchange. Hokkaido's digital museum describes grains as one part of a varied diet that also relied on gathered plants, fish, game and stored foods; gruels were everyday food, while steamed grains and home-brewed liquor were associated with festivals and rites. A study of Ainu food knowledge in the Saru community likewise records tonoto as a ceremonial drink made from rice and millet. These accounts provide context, not evidence that every Ainu household used the same recipe or held identical ritual practices.

The account also describes knowledge being gathered rather than frozen. The preservation group's elders' interviews and the community cooking activities make clear that tonoto is part of a continuing effort to teach Ainu food culture in the place where it is practiced. The research report on food knowledge in the Saru area records local women preparing tonoto and other Ainu foods for communal events, and notes that sharing dishes under Ainu names helps transmit that knowledge. These observations are about the studied community and should not be treated as a rule for all Ainu people.

What the grains and malt contribute

Rice and millet provide the starchy grain base. Cooking them with water turns the dry grains into a soft porridge that can be mixed with the malted rice. The equal amount refers to the two grains in the source's recipe; it gives no weight, volume, grain-to-water ratio or finished yield. The source does not specify rice variety or whether the grains are polished, hulled or milled.

Malted rice has a different role from the cooked grains. In Japanese grain fermentations, rice koji commonly supplies enzymes that break starch into smaller sugars; amylases are central to that conversion. Those sugars can then feed alcohol-producing fermentation. This explains a plausible general role for a rice malt in a grain drink, but the Saru chapter says only 'malted rice': it does not identify the culture, organisms, enzyme activity or whether the same koji practice used in sake is intended. The recipe therefore does not support naming Aspergillus oryzae or a particular yeast as its active culture.

The account uses a broad mix-until-smooth instruction, not a measured dose of malt. More precise quantities would make a different formula rather than clarify the one documented. Modern readers should keep the distinction between the historical account and a process they can reproduce with predictable alcohol production: the source gives neither a starter specification nor an objective endpoint.

The source's choice of egg millet also says something about access, not just flavor: sticky egg millet is named as the common choice because it is easiest to obtain. A substitution from one millet to another therefore changes the historical and practical meaning of the recipe as well as its grain profile. The FAO source describes the alternatives as attempts to recover a remembered older flavor, not as exact equivalents or a controlled comparative tasting.

Following the recorded method

The grains are first cooked with water until they form porridge. This is the method's only heating stage; it softens the grains and makes a uniform base. Cool the porridge until it is described as about skin temperature before adding the malt. That phrase is a qualitative observation, not a calibrated temperature, and the text gives no cooling time.

The porridge is transferred to a keg and the malted rice is mixed through until smooth. The account's fermentation period changes with the season: about two to three days in summer, about a week in winter. These are the times reported for this household method, not a controlled temperature schedule. The chapter sets no vessel capacity, room temperature, cover, stirring routine or readiness test. It does not say that a particular number of days guarantees a safe or alcoholic drink.

The cooked grain requires careful handling. Food Standards Australia New Zealand notes that Bacillus cereus spores may survive cooking and that cooked starchy foods, including rice, can support growth and toxin formation if held improperly; it recommends prompt cooling in smaller portions. That general food-safety advice does not validate the tonoto process, supply a fermentation control or establish a safe storage period. The Saru account contains no temperature, acidity, alcohol or storage limit. Do not treat the traditional duration, smell, taste or bubbling as proof of safety.

After fermentation, the drink is strained for serving. The FAO chapter reports the first drop being offered to the fire deity and women giving thanks at community gatherings. A hot charcoal is placed on top of the mixture while asking Apefuchi Kamuy to protect the ferment. This is a ceremonial act and must not be turned into a claimed sanitation or temperature-control step.

The timing is explicitly seasonal but not quantified by a thermometer. In a warmer season the cited period is shorter, while the winter period is longer; it is reasonable to report that relation because the source does, but it is not evidence for a modern fermentation temperature or a linear temperature-to-time conversion. The same restraint applies to 'skin temperature': it is the source's plain-language cue for cooling, not a reproducible inoculation limit.

Ceremony, service and regional difference

Tonoto is important here because of how it is shared and offered, not simply because it is alcoholic. The MAFF account connects it with prayers for the gods and ancestral rites in spring and autumn. The FAO chapter describes preparation ahead of a ceremony, the first-drop offering, communal straining and prayer. The drink belongs among a set of foods made for gatherings; research on Ainu foodways places home-brewed liquor alongside boiled grains, dumplings and other special dishes at festive and ritual meals.

The Saru formula should not be blended with other versions into a single universal method. The grain balance, available millet, terminology and timing differ in the accounts preserved by different communities. The Saru source names rice and egg millet in equal amounts and notes optional recovery of an older flavour with other millets; it does not give a complete alternative formula for each one. Keep those choices as contextual variants rather than assigning new ratios.

The official MAFF page also describes the strained residue called shirari as a food offering. That page is based on reporting with a Sapporo Ainu Association representative and cited Japanese reference works; it is useful evidence for wider Ainu practice, but it does not say that the Saru River chapter's particular batch used the same name or presentation. This distinction matters when a reader encounters tonoto beyond the single recipe.

There is no documented everyday serving recipe for this batch. The chapter places it at ceremonies and says that people drink it after the offering; it does not specify a vessel, accompaniment, portion or course order. Another official account shows a contemporary white liquid as tonoto, but that visual record cannot be made into a serving prescription or proof that every regional version has the same appearance.

What the record leaves open

The Saru formula should not be blended with other versions into a single universal method. The grain balance, available millet, terminology and timing differ in the accounts preserved by different communities. The Saru source names rice and egg millet in equal amounts and notes optional recovery of an older flavour with other millets; it does not give a complete alternative formula for each one. Keep those choices as contextual variants rather than assigning new ratios. The modern Kamuy Tonoto revival from Tanaka Sake Brewing uses a distinct commercial recipe, with millet, rice koji and yeast plus millet amazake. It is evidence of contemporary interpretation, not evidence for the Saru batch.

The contemporary official image associated with tonoto shows an opaque, pale liquid. It can inform the drink's broad visual form, but it is not identified as this exact Saru-region batch and cannot establish its taste, texture or fermentation quality. The recipe's own evidence remains the words and community practice recorded in the FAO chapter. Readers should treat unrecorded measurements and organism identities as unknown rather than silently filling them in from sake or another Japanese ferment.