築地丸豊 is an onigiri specialist tucked into the lanes of Tsukiji's outer market. The case holds around forty fillings — from familiar 梅 and 昆布 to seafood pulled straight from the market: salmon roe, simmered ingredients, and the shop's signature 鮭はらス, a rice ball stuffed with rich salmon belly.

The shop is takeout only. Mornings begin early; the queue builds; and when the rice is gone, the shutter comes down. Bring cash, choose quickly, eat soon.