Tora Shoyu Amakuchi Koikuchi Shoyu (とら醤油 本醸造濃口 あまくちしょうゆ)

The story behind it

Tora Shoyu in Kurashiki was founded in 1860. The brewery has supplied the city's kitchens since the end of the Edo period, and the tiger mark is well known locally.

The Seto Inland Sea region as a whole favors sweeter seasoning, and this sweet shoyu (soy sauce) follows that habit. It is not as sweet as the Kyushu style; it is a honjozo koikuchi (the standard dark shoyu) given a measured amount of sweetness. Used in simmered dishes it pulls the flavor together, and the dish keeps its outline even if you cut back on sugar and mirin.

If the same brewery's yellow-chive shoyu is the one you pour on, this is the one you simmer with.