BROIL VEGGIES: Position a rack near the top of the oven. Preheat broiler for ten minutes. On a broiler pan, add the tomatillos, white onion, jalapenos, green pepper, and garlic. Broil for about 8 minutes making sure to watch veggies closely so that they have a nice char but do not burn. Rotate pan after 3-4 minutes. Remove from oven and let cool for 5 minutes.
PREPARE VEGGIES: Remove the stem, membranes, and seeds from jalapenos as well as the peel from the garlic cloves.
PROCESS: Add broiled veggies, cilantro, lime juice, and salt to a food processor. Process ingredients to desired consistency. For best results, refrigerate for 1-2 hours and then serve.