Authentic Homemade Restaurant Style Salsa | Fire Roasted Grill Charred - Red and green recipe included. Here's how to make it: Prepare your grill outdoors using all-natural lump charcoal or untreated hardwoods. • Large items (tomatoes, onions, peppers): Grill, turning occasionally, until significantly charred. Onions should be blackened outside but still slightly crisp inside. • Small items (cherry tomatoes, garlic cloves): Grill on one side only until colored and softened; they will finish cook