Cooked-bean koji garum

A modern bean sauce under an old name

Cooked-bean koji garum is a contemporary, plant-based liquid seasoning in the modern family of koji-driven garums. The source method names cooked legumes as one possible substrate, but does not name a bean species or document a local tradition for this exact version. The recipe is therefore best read as one defined modern adaptation, not as a regional bean sauce with an established vernacular history. Its name connects it to garum by culinary analogy: both are savory liquids made by breaking down a protein-bearing substrate, but their ingredients and mechanisms differ.

The quick method specifies 400 g cooked legume, 250 g rice koji, 250 g water and 100 g salt for a one-kilogram mash. It gives a warm hold of 55–60°C for two to six weeks, followed by straining. The source calls the outcome a dark, glutamate-rich seasoning, but gives no bean-specific finished yield or sensory description. Neither the exact bean nor a particular colour, aroma or viscosity can be promised from the available evidence.

Garum’s history—and where this recipe sits

Ancient garum was a fish condiment. In Book 31 of Natural History, Pliny the Elder describes a salted liquid made from fish intestines and other parts, discusses varieties and production centres, and treats garum as a prized seasoning. The archaeological and textual record is diverse: names such as garum and liquamen are contested, and specialists warn against flattening all ancient fish sauces into one recipe or one stable category. That history gives context for the modern name but does not make a cooked-bean sauce an ancient continuation of the fish process.

Modern chefs and food researchers have extended the word to liquids made from plants, fungi, insects and meat, often with koji supplying enzymes that fish guts supplied in older fish sauces. This is a modern culinary reinterpretation. The particular quick-bean formula is documented by a modern recipe source, which supplies the substrate choices and timings but identifies no country, community, or first maker. Its supported geographic attribution is therefore unknown; a modern recipe’s publication location would not establish the food’s birthplace.

What the warm koji mash does

Rice koji is rice on which a koji mould has been grown. The mould produces enzymes, including proteases that cut proteins into smaller peptides and amino acids; amino acids such as glutamate contribute savory taste. Research on koji in soy-sauce production describes a broader enzyme set, including peptidases and enzymes that act on starch. These studies explain what koji enzymes can do in their tested systems, not a measured composition or yield for this cooked-bean batch.

The quick-garum method relies primarily on enzyme action during the warm hold. It is not accurate to describe the 55–60°C stage as the mould actively growing: at such temperatures the process source itself frames the work as enzyme-driven, and Noma describes its comparable 60°C method as precluding microbial activity while accelerating enzymatic reactions. The recipe therefore should not be confused with a room-temperature bean fermentation, a long-aged miso, or a lactic-acid ferment. It does not acquire an acid profile simply by sitting for weeks.

Heat, salt and time are part of the source’s formulation, but the exact roles cannot be separated experimentally from the recipe page alone. The warm condition supports rapid enzyme action; salt seasons the mash and affects its environment; blending brings the ingredients together; periodic mixing redistributes solids; and cloth straining separates liquid from spent material. These are descriptions of the documented method, not independently validated process controls.

Why the ingredients and bean choice matter

The beans are cooked before weighing. The recipe calls for 400 g of cooked legumes, not 400 g dry beans, so the water absorbed during cooking is part of the substrate as used. The source leaves species open; it does not establish that chickpeas, fava beans, soybeans, or another bean will give the same texture, enzyme access, yield or taste. Use of one named variety would be an adaptation, not a detail supplied by this recipe.

Rice koji contributes the enzyme-bearing material. Water makes the ingredients blend into a pourable slurry, while salt is measured by weight with the rest of the batch. The recipe’s 100 g salt in a total 1,000 g formula is a 10% share of total mash weight. This figure belongs to this particular quick-garum formula; the companion amino-paste page gives different salt and time ranges for other preparations. Those values should not be combined into a new universal ratio.

No additional seasoning, aromatic, acid, oil or starter culture is specified. Adding one would create a variation and could alter the mash; the available recipe does not document how such additions affect this process. The method also does not specify bean cultivar, cooking-water handling, salt type, or a sensory test for completion.

Method and its limits

The source batch is weighed and blended into a pourable slurry, then put in a jar or bag for a steady warm hold. It calls for stirring or massaging every few days and gives a two-to-six-week window. After straining through cloth, it directs refrigeration or freezing. No finished yield is measured, so the recipe does not promise a volume of sauce. A different vessel or batch size is not covered by the documented yield data.

The second source’s general amino-paste method gives a separate one-to-four-week range and a different salt range. Those figures describe its broader method, not a correction to the specific quick-garum formula. The source also discusses other substrates, but it provides no bean-species trial that would let a cook predict which bean breaks down most fully or when this particular mash is finished. The stated time window is thus the source’s recipe range, not a validated readiness test.

Most importantly, these pages do not provide a validated safety study for this exact cooked-bean mixture. They do not establish a critical endpoint, shelf stability, or a tested storage life. The recipe’s refrigeration-or-freezing instruction after straining is retained, and the sauce must not be treated as canned or shelf-stable. A related source’s discussion of its own formulation or of fish garum cannot validate this bean recipe; fish-specific safety guidance is likewise not a substitute for a bean-process validation.

Related versions and regional variation

The quick-garum page places cooked legumes beside mushroom, meat and shrimp-shell substrates and names yellow-pea garum as another use of the same broad build. These are neighbouring adaptations, not interchangeable identities: substrate changes affect protein, water and solids, and the source does not claim that one finished liquid represents all of them. The recipe family on this site keeps those subjects separate where they have their own records.

Contemporary cooks have also used koji to make plant-based sauces with other ingredients. Noma describes experiments with peas and other plant matter, and notes that plant-based garums may need a shorter warm period than animal-protein versions in its practice. That observation is not an instruction to alter this bean recipe: its two-to-six-week window is the stated source range, and the exact beans remain unspecified.

No named regional bean-garum tradition, historical bean variant, or locally distinctive seasoning is documented in the sources consulted. The honest variation here is the source’s open choice of cooked legume substrate. A specific bean, seasoning, temperature, or maturation period should be presented as its own adaptation only when a source documents it.

How cooks use it

Garum is used as a concentrated seasoning rather than as a bowlful condiment. Pliny’s account places ancient fish garum among table seasonings; modern producers describe their garums as savory liquids used to deepen other foods. For the bean version, this supports a restrained seasoning role in cooking, but not a traditional dish pairing or cultural occasion. None is named in the recipe source.

The plant base makes this version distinct from fish sauce in its ingredient identity, but the sources do not document a specific allergy profile, dietary certification, or guarantee about cross-contact. Rice koji may be made from rice, while the recipe’s bean species is unspecified; cooks should consult the ingredients used in their own koji and beans rather than infer labels or allergen status from the title.