Koya-dofu

Koya-dofu (kōya-dōfu, 高野豆腐 in Japanese) also known as Shimi-dofu, Kori-dofu, or Koyasan-dofu is freeze-dried tofu, a Japanese pantry staple and an important ingredient in Buddhist vegetarian cookery. It originated from Japan. It is made of soy, coagulants, and baking soda. It looks like a hard sponge and needs to be soaked before use. It is mainly used in stews and soups.

Description: Wikipedia — Koya-dofu, CC BY-SA 4.0