What is koya dofu?

Koya dofu is a traditional Japanese food made from dried tofu. It is often used as a topping for udon or soba noodles, or served as a side dish with a dipping sauce. Koya dofu is made by boiling fresh tofu in water, slicing it into small pieces, and then drying it in the sun or on a high heat in an oven. This process gives koya dofu a unique texture, similar to that of marshmallows or sponge cake, and a nutty, slightly smoky flavor. Koya dofu is a popular ingredient in Japanese cuisine due to its long shelf-life and versatility in various dishes.