Salsa with tomatoes

4 large Roma tomatoes (about 1 lb./1/2 kilo) 3 serrano chiles 2 tablespoons mild oil 1/4 medium onion , small dice 2 large cloves of garlic , peeled and[...]

3 canned tomatoes , from a 14 . 5-oz can of redpack whole peeled tomatoes with juice (drained) 4 garlic cloves , roasted 1/2 medium onion , roasted 1 teaspoon[...]