How to Make It
In a medium bowl, mix the tomatoes, onions, cilantro, garlic, jalapeño and lemon juice and season with salt.
Light a grill or preheat a grill pan. Brush the rolls with olive oil and toast them on the grill or in the grill pan over moderate heat. Grill the chorizos until browned, about 20 minutes. Let the chorizos cool slightly, then cut each on the diagonal into 12 thin slices. Top each roll half with 3 slices of chorizo and 1 tablespoon of salsa and serve.