Niigata · Hokuriku · Japan · No. 04 of 05 · 8 min read

Sake is rice. Until it is not.

Sake is made from four ingredients: rice, water, koji mold, and yeast. This is the simplicity. The complexity begins immediately.

By Kenji Mori · Niigata, Japan · Issue 47, Feature 04

I. The water

Niigata is the most famous sake-producing region in Japan, and the reason is the water. The snow country — yukiguni — sees meters of snowfall, and snowmelt fills the rivers and aquifers with some of the softest, most mineral-pure water in the country. Soft water is low in calcium and magnesium, and this mineral composition directly affects how the sake ferments.

Hard water (Nada, Hyogo) produces vigorous fermentation, bolder flavor, a more masculine sake that pairs with grilled meat. Soft water (Niigata) produces a slower, more delicate fermentation with cleaner flavor — the tanrei karakuchi style that disappears from the palate immediately after swallowing, leaving only a faint mineral trace. This character is the water.

II. The koji

Kōji mold — Aspergillus oryzae — is the organism that makes sake biologically possible. Sake rice does not ferment on its own because the starch cannot be directly consumed by yeast. The kōji produces amylase enzymes that break the starch into fermentable sugars. These sugars are then consumed by yeast, producing alcohol.

The kōji grows on steamed rice in a dedicated room — the kōji muro — where temperature and humidity are precisely controlled. The kōji maker tends the growing kōji over two days, turning and aerating by hand. The kōji muro is where the sake is made, because the kōji is what makes sake sake rather than rice water.

III. The labels

The polishing ratio — seimaibuai — is the first number on a sake label that has meaning. A seimaibuai of 70 means 30% of the outer grain has been milled away. A seimaibuai of 50 means half the grain is gone. The more you mill, the more protein, oil, and minerals you remove, and the more delicate the resulting sake.

A sake labeled Daiginjō has been milled to at least 50%. A sake labeled Junmai has been made with no added distilled alcohol. A Junmai Daiginjō is milled to 50% or below and contains only the four core ingredients. Seimaibuai and junmai — the two numbers that carry most of what you need.

IV. The pairing

Conventional wisdom: sake pairs with anything that does not pair with red wine. Broadly correct. Sake and seafood is the most natural pairing — clean mineral flavors meet iodine and brine. Sake and cheese is genuinely excellent — the lactic acid in cheese and slight acidity in sake create a harmony wine and cheese does not always achieve.

The specific recommendation: a Niigata junmai ginjō — tanrei karakuchi, clean and dry — with karaage (Japanese fried chicken) and a simple cucumber salad dressed with rice vinegar and sesame. The sake's dryness cuts the fat of the fried chicken. The dryness also makes the cucumber taste like itself.

Recipe — Karaage · for the Niigata junmai ginjō

Kenji Mori · Niigata · serves 4 · the pairing made literal

Ingredients

The method

  1. Marinate chicken in soy, sake, mirin, ginger, garlic for 30 minutes at room temperature. Do not exceed an hour — the salt firms the surface.
  2. Heat oil to 160°C (320°F). Drain chicken, dredge in potato starch, shake off excess.
  3. Fry in batches 90 seconds at 160°C. Rest on a rack 4 minutes. The chicken should be barely golden, mostly cooked through.
  4. Raise oil to 190°C (375°F). Fry the rested chicken 60–90 seconds until deep gold and audibly crisp.
  5. Drain. Salt lightly. Serve immediately with lemon wedges and a chilled junmai ginjō.

About the contributor

Kenji Mori

Kenji Mori writes about sake, rice, and Niigata sake culture from Niigata, Japan. He drinks the local tanrei karakuchi cold, in a wine glass, with karaage on Friday nights.

Editor’s notes — the longer view

A note on temperature. Serve ginjō and daiginjō chilled — approximately 10°C (50°F). Serve honjōzō and junmai at room temperature or warmed to 45°C (113°F) — warm sake, or nurukan, is appropriate for less delicate styles in cooler weather. Never warm a daiginjō. The aromatics dissipate with heat.

A note on the cup. Sake is served in many vessels — ochoko, guinomi, masu, wine glass — and the choice matters less than people think for everyday drinking. For a daiginjō you want to smell, a tulip wine glass is genuinely the best vessel.

A note on age. Most sake is meant to be drunk young — within a year of bottling, sometimes within months. Refrigerate after opening; drink within a week. Sake is not wine; it does not improve on the shelf at home. Koshu is the exception — intentionally aged at the brewery.

A note on the brewery. If you visit Niigata, the breweries are open. A tour costs little or nothing and the tasting at the end is generous. The koji muro is the room to ask about — it is what makes the brewery the place it is.

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