From The Best Recipes in the World by Mark Bittman. "This popular one-pot dish can be made with meat or vegetables and, like most casseroles, is easily varied. There are many similar dishes throughout East Asia, but this one is made distinctively Japanese by the addition of mirin and even more so if you use dashi for the cooking stock -- a terrific touch. Arbruage -- fried tofu -- is available, precooked, at Japanese markets; it's slightly sweet. Firm, well pressed tofu can be used as a substitute."