MAEBASHI, Gunma Prefecture--What to do with “okara,” or soy pulp, a by-product of tofu production, has long vexed tofu makers. Until now, a large percentage of the pulp was discarded as waste ...

Known as okara in Japan, it is also referred to as ... except in places that specialize in tofu dishes. Thicker than a soup, biji jjigae is often mixed or eaten with rice, with its savory and ...