Heat a cast iron pan or comal to medium heat. Line the pan with easy release foil paper…or not, lol! I use it to save me some scrubbing time (bad wrist). Add the tomatoes, onions, peppers and garlic. Drizzle with a little oil and cook for 25 to 30 minutes turning as needed.
Remove the garlic after 15 minutes. Once the vegetables have charred and blackened in some spots, remove them from heat, cover and let them cool.
Remove blistered skin from poblano, stems and seeds from peppers and skins from garlic. Roughly chop all of the ingredients before adding to the food processor. Pulse to chop until you reach the consistency you like. Add lime juice and salt to taste. Mix and pour into serving dish. Sprinkle with chopped cilantro. Yields about 2 cups.