Put 1 c. fresh tomatillos, husked, into boiling water. Lower heat and simmer gently 20 minutes. turn frequently so they don't split. Drain. Mix 2tbs onion (diced), 2 Jalapeno or other hot chilies(seeded & chopped) & 2 Tbsp fresh cilantro (chopped). Blend tomatillos (in food processor/blender) to make coarse puree. Add other ingredients-Blend. Chill- Serve. Will keep several days in frig-or freeze for several months. Great appetizer or w/ grilled chicken or fish.