Return the tomatoes to the skillet and season with salt. 3. Meanwhile, light a grill. Spread out a double layer of heavy-duty aluminum foil that's 12 inches longer than the salmon fillet.

wrap in foil, place on a baking sheet, and roast until soft, about 45 minutes. Set aside to cool. Combine 4 cloves of the roasted garlic with the tomatoes, onion, serrano pepper, vinegar ...