Broil the tomatillos on a sheet pan, 3 to 4 inches from heat, until all sides are browned and beginning to blacken. This takes up to 10 minutes. Remove from broiler and set aside.
Put garlic cloves, chipotles and jalapeno pepper into the bowl of a food processor. For less heat, remove the seeds and veins from the jalapeno. Otherwise, leave it all in. Process until finely minced.
Add the tomatillos, tomatoes, cilantro and salt to the food processor. Process until you reach the consistency you like.