Entered for safe-keeping, from Kuhn Rikon's "Quick Cuisine". K-R recommends at least a 4-quart pressure cooker for this recipe. For maximum flavor, use a Long Soak (8 hours or overnight) before cooking the beans AND pressure cook one day prior to serving; add the chopped tomato, lime juice and salt just before serving. (The long soak and the salt help to reduce gassiness.) (It is best to add acids after black beans have fully cooked.) This dish goes well with enchiladas. Or you can preheat an oven to 350 degrees F, transfer the beans to an ovenproof dish, and sprinkle with shredded Monterey Jack cheese; then bake for 15 minutes or until cheese melts.