Izushi

A narezushi made by slow, cold lactic fermentation of Hokkaido-caught fish — herring, atka mackerel, salmon — layered with rice malt and vegetables like cabbage, carrot, daikon, and ginger. It's said to smell milder than other narezushi styles because the fermentation period is shorter. The rice's sweetness balances against the malt's sourness in a way that suits it equally to a meal or a drink. Atka mackerel is especially common, being affordable and caught steadily through the year.

Rice cooked firm and cooled is mixed with fresh fish, vegetables, and malt, packed into a barrel, and weighted down to ferment. The salted raw fish is first soaked in water to draw out the salt, and getting that step right is said to make or break the dish — too little salt removed and it won't keep or taste of much, too much and it turns overly salty. It's a dish where fish, rice, and malt simply sit together in the barrel, and time itself does the seasoning.

It's said to have begun in fishing households around the time of the first snowfall, and the cold-fermentation method itself is said to have taken root precisely because of the cold coastal climate running from Hokkaido down into Tohoku. Packed in late autumn and eaten around New Year, it settled into the region as a traditional winter preserve. That each area's recipe differs slightly is itself a sign of how each fishing town shaped it in its own way.