Shochu & Awamori Glossary

Key terms from the world of shochu and awamori, organized by category. Japanese terms are given in romanized form with the original characters.

Brewing Terms

Koji (麹) Koji

Steamed grain (rice or barley) inoculated with koji mold (Aspergillus). The mold produces enzymes -- amylase, protease, and others -- that convert starch into sugar and protein into amino acids. Koji is the foundation of all shochu production.

Koji-kin (麹菌) Aspergillus mold

The collective term for molds of the Aspergillus genus used in shochu. Three types are used: black koji, white koji, and yellow koji, each producing a different flavor character.

Kuro Koji (黒麹) Black Koji

Aspergillus luchuensis. Generates large amounts of citric acid, producing shochu with deep body and bold flavor. The only koji used for awamori. Originally identified in Okinawa.

Shiro Koji (白麹) White Koji

Aspergillus luchuensis var. kawachii. A natural mutation of black koji discovered by Genichiro Kawachi in 1918. Produces citric acid on par with black koji but yields lighter, fruitier shochu. The dominant koji in mainland shochu today.

Ki Koji (黄麹) Yellow Koji

Aspergillus oryzae. The same mold used for sake brewing. Produces less citric acid, making temperature control more challenging, but creates shochu with elegant, floral aromatics. Used for select imo shochu.

Seikiku (製麹) Koji-Making

The process of growing koji mold on steamed rice or barley over approximately 40-48 hours under carefully controlled temperature and humidity.

Ichiji-shikomi (一次仕込み) Primary Fermentation

The first fermentation stage, combining koji with water and yeast to create the yeast starter (shubo). Takes about 5-8 days, building a robust yeast population.

Niji-shikomi (二次仕込み) Secondary Fermentation

The second stage, adding the main ingredient (sweet potato, barley, rice, brown sugar, etc.) and water to the primary mash for full fermentation over 8-14 days. This is where the shochu's core flavor develops.

Moromi (もろみ) Fermentation Mash

The fermenting liquid produced during the brewing process, in which saccharification and alcoholic fermentation proceed simultaneously. Reaches about 14-18% ABV before distillation.

Shubo (酒母) Yeast Starter

The primary mash in which yeast has multiplied to a high concentration. Also called "ichiji moromi" (primary mash). It serves as the engine for secondary fermentation.

Kobo (酵母) Yeast

Microorganisms that convert sugar into alcohol and carbon dioxide. Different yeast strains produce different aromatic profiles in the finished shochu.

Citric Acid (クエン酸) Kuensan

An organic acid generated in abundance by black and white koji. It acidifies the mash, suppressing spoilage bacteria -- an essential safeguard in the hot, humid climates of Kyushu and Okinawa.

Saccharification (糖化) Toka

The enzymatic conversion of starch into fermentable sugars by amylase from the koji mold. In shochu, this occurs simultaneously with alcoholic fermentation -- a process known as multiple parallel fermentation.

Multiple Parallel Fermentation (並行複発酵) Heiko Fuku Hakko

A fermentation method unique to Japanese brewing where saccharification and alcohol production happen at the same time. This technique enables higher alcohol yields than sequential processes.

Kame-jikomi (甕仕込み) Clay Pot Fermentation

Traditional method of fermenting in ceramic clay pots (kame). The pots' far-infrared effect and micro-porosity are believed to contribute to a rounder, mellower character.

Distillation Terms

Joryu (蒸留) Distillation

The process of heating the fermented mash to vaporize alcohol and flavor compounds, then cooling the vapor back into liquid. This concentrates the alcohol and captures the aromatic essence of the ingredients.

Pot Still (単式蒸留器) Tanshiki Joryuki

A batch-operated still that processes one load of mash at a time. All honkaku shochu is made with a pot still. Retains rich, ingredient-derived flavors in the spirit.

Column Still (連続式蒸留器) Renzokushiki Joryuki

A continuously fed still that produces high-purity, neutral alcohol. Used to make korui shochu. Very little ingredient character remains.

Atmospheric Distillation (常圧蒸留) Joatsu Joryu

Traditional distillation at normal atmospheric pressure, with a boiling point of approximately 90-100 C. The higher temperature extracts fusel oils and other high-boiling-point compounds, yielding bold, full-bodied shochu.

Vacuum Distillation (減圧蒸留) Gen'atsu Joryu

Distillation under reduced pressure (0.1-0.3 atm), lowering the boiling point to 40-50 C. Popularized in the 1970s by Oita barley shochu makers. The low temperature minimizes heavy compound extraction, producing a lighter, cleaner, more approachable spirit.

Genshu (原酒) Undiluted / Cask Strength

Shochu bottled without water adjustment after distillation. Typically 36-44% ABV. Delivers a powerful, direct expression of the ingredient and the craft.

Hanatare (初垂れ) First Cut / Heads

The very first liquid off the still. Highest in alcohol (60%+) and most aromatic. Yonaguni Island's "hanazake" is this fraction, bottled at full strength.

Hondare (本垂れ) Heart / Middle Cut

The middle portion of the distillation run. The most consistent and balanced fraction, forming the bulk of the finished product.

Suedare (末垂れ) Tails

The final portion of the run, lower in alcohol and higher in off-flavors. Usually recycled into the next distillation batch.

Fusel Oil (フーゼル油) Fuzeru Yu

Higher alcohols (isoamyl alcohol, etc.) produced by yeast during fermentation. In small amounts, they add body and complexity; in excess, they cause harshness. More abundant in atmospheric distillation.

Aging (熟成) Jukusei

Resting the distilled spirit for a period to let it mellow and integrate. The choice of vessel -- clay pot, barrel, or tank -- determines the character of the maturation.

Kame Chozo (甕貯蔵) Clay Pot Aging

Traditional aging in porous ceramic pots. Gentle oxidation through the micro-pores and mineral leaching from the clay produce a smooth, rounded spirit.

Taru Chozo (樽貯蔵) Barrel Aging

Aging in oak casks (sherry, bourbon, brandy barrels, etc.). The spirit takes on amber color plus notes of vanilla, caramel, and spice from the wood.

Awamori Terms

Awamori (泡盛) Awamori

Okinawa's indigenous distilled spirit, produced continuously for over 600 years. Made from Thai indica rice and black koji using all-koji fermentation. Legally classified as single-distilled shochu. Holds GI "Ryukyu" designation.

Kusu (古酒) Aged Awamori

Awamori aged for three or more years. Develops increasing mellowness and complexity over time, with aromas of vanilla, nuts, and caramel. Since 2015, the entire contents must meet the three-year minimum to carry the "kusu" label.

Shitsugi (仕次ぎ) Progressive Topping-Up

Okinawa's traditional method for cultivating aged awamori. Multiple pots are arranged by age; spirit drawn from the oldest is replenished from the next oldest, and so on, with new-make added to the youngest. Similar to the solera system for sherry.

Hanazake (花酒) Flower Spirit

A 60% ABV awamori produced exclusively on Yonaguni Island from the first cut of distillation (hanatare). Classified as "spirits" under the Liquor Tax Act. Made by only three distilleries. Reserved for celebrations and ceremonies.

Zenryo Koji-jikomi (全量麹仕込み) All-Koji Fermentation

Awamori's unique production method where all rice is converted into koji and fermented in a single stage with water and yeast -- unlike the two-stage process used for mainland shochu. Produces powerful enzyme activity and a distinctive depth of flavor.

Shuri Sanka (首里三箇) The Three Districts of Shuri

The three neighborhoods near Shuri Castle (Sakiyama, Akada, Torihori) where the Ryukyu royal government exclusively permitted awamori production, ensuring quality control and supply management.

Usaki (御酒) Royal Liquor

The historical term for awamori during the Ryukyu Kingdom era. It was used in royal rituals, diplomatic banquets, and as tribute to China.

Karii (カリー) Okinawan Toast

The Okinawan word for "cheers." Written with the characters for "auspicious" or "good fortune." The full phrase is "Karii sabira!" (Let us toast!).

Serving Terms

Oyuwari (お湯割り) With Hot Water

Shochu diluted with hot water. The golden ratio is shochu 6 : hot water 4 (roku-yon). Always pour the hot water first, then add the shochu on top. Warming releases aromas beautifully.

Mizuwari (水割り) With Cold Water

Shochu diluted with water, usually served with ice. Creates a softer, more food-friendly drink. Soft water is recommended.

Maewari (前割り) Pre-Diluted & Rested

Shochu and water mixed days in advance and stored in a cool, dark place. The molecules integrate over time, producing an exceptionally smooth texture. A Kagoshima tradition.

On the Rocks (ロック) Rokku

Shochu poured over large ice cubes. The flavor evolves as the ice slowly melts, starting bold and gradually softening.

Soda-wari (ソーダ割り) Shochu Highball

Shochu topped with chilled soda water, at a ratio of roughly 1:3 or 1:4. Stir only once to preserve carbonation. One of the fastest-growing serving styles.

Straight / Neat (ストレート) Sutoreeto

Shochu served undiluted. Best accompanied by a water chaser. Reveals the full character of the spirit, the ingredient, and the maker's craft.

Kuro-joka (黒ぢょか) Black Clay Teapot

A traditional Kagoshima drinking vessel -- a flat, black ceramic teapot used to gently warm maewari over low heat. The vessel itself is an icon of Kagoshima shochu culture.

Roku-Yon (ロクヨン) 6:4 Ratio

The golden ratio for oyuwari: 6 parts shochu to 4 parts hot water. At 25% ABV, this yields a drink of approximately 15% ABV -- an easy, comfortable drinking strength.

Ingredient Terms

Kogane Sengan (黄金千貫) The King of Shochu Potatoes

The most widely used sweet potato for imo shochu. White-fleshed, high in starch, and prized for its rich sweetness and smooth body. The name means "worth a thousand pieces of gold" -- a nod to its prolific harvests.

Murasakimasari (ムラサキマサリ) Purple Sweet Potato

A purple-fleshed sweet potato variety rich in anthocyanins. Yields imo shochu with floral, fruity aromatics. Best known as the ingredient behind "Aka Kirishima."

Joy White (ジョイホワイト) Shochu-Bred Potato

A sweet potato variety registered in 1994, developed specifically for shochu production. High starch content produces a clean, crisp spirit with bright citrus-like notes.

Indica Rice (インディカ米) Thai Long-Grain Rice

Long-grain rice grown in Thailand, Vietnam, and other tropical regions. The elongated, non-sticky grains are ideal for koji penetration and for awamori's all-koji fermentation method. The standard raw material for awamori.

Two-Row Barley (二条大麦) Nijo Omugi

The barley variety used as the primary ingredient for mugi shochu. Each node of the grain head bears two rows of kernels. Also used in beer brewing. Valued for its high starch content.

Kurozato (黒砂糖) Unrefined Brown Sugar

Minimally refined sugar made by boiling down sugarcane juice. Retains minerals and vitamins. The primary ingredient for kokuto shochu, sourced from the Amami Islands.

Kansho (甘藷) Sweet Potato (formal name)

The formal Japanese term for sweet potato (satsumaimo). The primary ingredient for imo shochu. Kagoshima and Miyazaki are the main growing regions. Different varieties yield dramatically different flavor profiles.

Classification & Regulation

Honkaku Shochu (本格焼酎) Authentic / Pot-Distilled Shochu

Shochu distilled in a pot still, legally termed "single-distilled shochu" (tanshiki joryu shochu). Retains rich, ingredient-driven flavors. Encompasses imo, mugi, kome, kokuto shochu, and awamori. Maximum 45% ABV.

Korui Shochu (甲類焼酎) Column-Distilled Shochu

Shochu produced in a column still, legally termed "continuously distilled shochu." Clean, neutral, and nearly flavorless -- the workhorse base for chuhai and sour cocktails. Maximum 36% ABV.

Konwa Shochu (混和焼酎) Blended Shochu

A blend of honkaku (pot-distilled) and korui (column-distilled) shochu. Balances the flavor of the former with the smoothness and affordability of the latter.

GI (地理的表示) Geographical Indication

A system protecting the names of spirits whose quality and reputation are linked to a specific region and its traditional production methods. Four shochu/awamori GIs exist: Iki (1995), Kuma (1995), Ryukyu (1995), and Satsuma (2005). All carry WTO TRIPS Agreement protection.

Shuzeihō (酒税法) Liquor Tax Act

The Japanese law governing the production, sale, and taxation of alcoholic beverages. It defines the two categories of shochu (single-distilled and continuously distilled) and contains the special provision that restricts kokuto shochu production to the Amami Islands.

Joryusho (蒸留所) Distillery

A facility that produces shochu. Also called "shuzojo," "shuzo," or simply "kura" (cellar/brewery). There are approximately 970 distilleries across Japan.