If you like your beef more rare, keep the steak whole and rub with seasonings; grill about 3 minutes on each side. Let steak stand 5 minutes; cut across grain into thin slices. If you'd like something richer than sour cream, try crema Mexicana, usually located with the Mexican cheeses. Keep the vent hood on as you cook the steak; the chile powder can be quite pungent.
View Recipe: Steak and Charred Vegetable Tacos