Smaller and rounder than ordinary black beans, these are black soybeans. They have green kernels and were a real fad in Korea a few years ago, for their many health benefits. Look for them with the other dried beans and soybeans at Korean grocery stores.
My cookbooks
Which to get? Both are best sellers and either one is a good choice if you want to learn Korean home cooking. my first book has all the recipes for all the essential Korean pastes and sauces, but my second book Maangchi's Big Book of Korean Cooking has more recipes.