Simmered “Koya-Dofu” Freeze-dried Tofu
This ingredient seems a hard dry bread maybe.
“Koya-Dofu” is a frozen and dried tofu, at first frozen then dried.
Now many of the commercially available products, “baking soda” is added as expansion and softening agent.
When you use products that contain the baking soda, you don’t need to soak them in water before cooking. And you have to simmer them in salty dashi broth directly for that not crumble boiled.
is a dried frozen tofu, also called “Kori-Dofu” 高野豆腐（こうやどうふ） literally “tofu of mount Koya” 凍り豆腐（こおりどうふ） literally “frozen tofu”
is a Japanese mustard spinach (Brassica rapa var. perviridis) 小松菜（こまつな） literally “Komatsu region vegetable”