Grilled Skirt Steak Tacos with Roasted Poblano Rajas Recipe | Epicurious

Ingredients

• 2 medium white onions, sliced into 1/2-inch rounds (keep the rounds intact for easy grilling)
• 3 garlic cloves, peeled and roughly chopped
• 3 tablespoons fresh lime juice
• 1/4 teaspoon cumin, preferably freshly ground
• Salt
• 1 pound beef skirt steak, trimmed of surface fat as well as the thin white membrane called "silverskin"
• Vegetable or olive oil for brushing or spritzing the onions and meat
• A small bowlful of lime wedges for serving
• 12 warm, fresh corn tortillas (See how to reheat corn tortillas )