Mirin and Cooking Sake: The Sweet Backbone of Washoku

In the lexicon of washoku—traditional Japanese cuisine—mirin and cooking sake sit alongside soy sauce and dashi as foundational seasonings. Both are fermented rice products, but their roles in the pot diverge: sake lifts and rounds flavour, while mirin lends sweetness, gloss, and body. Understanding the distinction between them, and between grades of mirin itself, transforms everyday simmering into precision.

Hon-Mirin: The True Original

Hon-mirin—literally "true mirin"—is a sweet rice wine produced by fermenting steamed glutinous rice, rice kōji, and shōchū spirit for forty to sixty days. The result is a liquid containing 14 percent alcohol and 40 to 50 percent natural sugars, predominantly glucose. No additional sugar is added; the sweetness comes entirely from enzymatic breakdown of starches during fermentation.

This authentic mirin has been produced in Japan since the sixteenth century, originally drunk as a sweet liqueur before finding its way into the kitchen. It carries a delicate, complex flavour—floral, slightly funky, faintly nutty—that cheap imitators lack. Hon-mirin is sold as an alcoholic product and taxed accordingly, which explains its higher price and scarcity outside specialty stores.

Aji-Mirin and Mirin-Like Seasoning

Aji-mirin translates to "mirin taste" or "mirin-type seasoning." It is a fabricated product: water, glucose syrup or corn syrup, rice, and flavourings, with an alcohol content below 1 percent. Salt is often added to circumvent alcohol-beverage tax laws. While convenient and shelf-stable, it lacks the fermentation depth of hon-mirin and delivers a one-dimensional sweetness.

A third category exists: mirin-fū chōmiryō, or "mirin-style seasoning," which contains no alcohol at all. These are salted sugar syrups with rice extract and are inappropriate for dishes requiring the tenderising and odour-masking properties of alcohol. Labels matter: check the ingredient list and alcohol percentage. Authentic hon-mirin will list glutinous rice, rice kōji, and shōchū or alcohol—nothing more.

Cooking Sake Versus Table Sake

Cooking sake, or ryōrishu, is brewed specifically for the kitchen. It typically contains 12 to 14 percent alcohol and includes a small amount of added salt (around 2 percent), which makes it unpalatable to drink but exempts it from alcohol taxation. This salt must be accounted for when seasoning a dish.

High-quality drinking sake—junmai or junmai ginjō—can be used in cooking, particularly for delicate broths or steaming shellfish, where its cleaner flavour profile is perceptible. However, the heat of cooking volatilises the fragrance compounds that justify the premium price, so reserve expensive bottles for the table. Mid-range futsū-shu (ordinary sake) performs well in braises and marinades without waste.

When and How to Add Each

Cooking sake is typically added early. Its alcohol helps to remove fishy or gamy odours—a process called niku-kezuri—and it penetrates protein fibres to tenderise. In a simmered dish such as nitsuke (soy-braised fish), sake enters the pot before or alongside the fish, allowing the alcohol to evaporate and mellow the aromatics.

Mirin enters later, often in the final third of cooking. Added too early, its sugars may caramelise or burn; added near the end, they form a glossy coating—teriツヤ—and balance the salinity of soy sauce or miso. For teriyaki glazes, mirin is reduced with soy and sake until syrupy, concentrating both sweetness and sheen. The ratio is commonly 1:1:1 (soy, mirin, sake), adjusted to taste.

When making tamagoyaki (rolled omelette), a small quantity of mirin—one to two teaspoons per three eggs—adds sweetness and assists in browning without grittiness. The alcohol cooks off almost instantly in the hot pan, leaving only flavour and texture.

Substitutions and Workarounds

If hon-mirin is unavailable, a workable substitute is one tablespoon of granulated sugar plus three tablespoons of sake for every four tablespoons of mirin. This approximates the sweetness and alcohol but lacks the umami complexity and body. Alternatively, dry sherry or a semi-sweet white wine such as Riesling can stand in, though the flavour profile shifts.

Aji-mirin should not be swapped one-to-one for hon-mirin in recipes balanced for the latter; reduce the quantity by one-quarter and increase soy or salt elsewhere to compensate for the added sodium. Never substitute mirin for sake or vice versa—they are not interchangeable. Sake provides dryness and lift; mirin provides sweetness and viscosity.

For strict alcohol-free cooking, omit both and introduce sweetness through a small amount of honey or brown rice syrup diluted with dashi or water. The dish will lack the characteristic gloss and mouthfeel, but flavour balance can still be achieved.

Provenance and Sourcing

Notable hon-mirin producers include Mikawa Mirin from Aichi Prefecture, aged for three years in ceramic pots, and Takara Hon Mirin, widely exported. Look for the words hon-mirin and an alcohol content above 13 percent on the label. Bottles are typically 500 to 700 millilitres and should be stored in a cool, dark cupboard after opening; the high sugar and alcohol content prevent spoilage, but oxidation will eventually dull the aroma.

Cooking sake is less varied, though brands such as Takara Shuzo and Kikkoman Aji-Mirin (confusingly named, as it also produces actual hon-mirin) are reliable. For those equipping a kitchen with the intention of exploring washoku in depth, a bottle of each—hon-mirin and ryōrishu—is the practical foundation. Wudy Kitchen tools, designed for precision and material integrity, pair naturally with this philosophy of quiet, ingredient-focused craft.