Sakura Shiranami: The Imo Shochu Satsuma Shuzo Makes With Yellow Koji

Satsuma Shuzo is one of the defining names in sweet potato shochu, and Satsuma Shiranami is the bottle most Japanese people picture when they hear imo shochu: heavy, earthy, traditionally drunk with hot water.

Sakura Shiranami is the same company going the other direction.

The Koji Change

Standard Satsuma Shiranami is made with rice koji in the traditional Kagoshima manner, and it is deliberately robust. Satsuma Shuzo recommends hot water for it, specifically to bring out the sweet potato's depth and aroma.

Sakura Shiranami uses yellow koji instead.

This is a bigger deal than it sounds. Yellow koji, Aspergillus oryzae, is the sake mold. Almost all imo shochu uses black or white koji, both of which produce large amounts of citric acid that protect the mash from spoilage in Kyushu's heat. Yellow koji does not produce that protection, so using it requires much tighter temperature control and carries real risk of losing a batch.

The reason to accept that risk is aroma. Yellow koji produces a fragrant, delicate, almost ginjo-like character that black and white koji do not. Applied to sweet potato, it yields a shochu that smells more like fruit and flowers than like earth.

What Else Changes

The potatoes are fresh sweet potatoes from Minami-Satsuma, the southern part of the Satsuma peninsula in Kagoshima.

Freshness matters more in imo shochu than in any other shochu style. Sweet potatoes are perishable, they cannot be stored the way barley or rice can, and the harvest window sets the production window. A distillery working with fresh local potatoes is working on a schedule the crop dictates.

What It Tastes Like

Elegant and aromatic, with a clean, crisp flavor and a smooth, soft finish. Delicate, close to floral, and noticeably approachable compared to the heavier imo style.

If you have tried imo shochu and found it too earthy, this is the version built for you.

How to Drink It

Unlike the standard Shiranami, this one is better cold than hot.

On the rocks or with a splash of cold water, in a shochu tumbler. Heat would drive off exactly the aromatics the yellow koji was chosen to create, which inverts the usual imo shochu advice.

Mizuwari also works. Cut with cold water, rested, and served without ice.

Pair It With

Lighter than you would normally pair with imo shochu. Fatty toro, yakitori, grilled fish. The softness means it does not steamroll delicate food.

Try It at Juraku

Sakura Shiranami is on the shochu list at Izakaya Juraku, Lower East Side. Check the current menu or ask us what is open.