GRILLED STEAKS WITH RED CHILE SAUCE

Steps:

• Make sauce:
• Rinse chiles and remove stems, then split open and discard seeds and ribs. Heat a dry well-seasoned cast-iron skillet or heavy skillet over moderate heat, then toast chiles in batches, turning them, about 30 seconds total. Transfer chiles to a heatproof bowl and pour boiling water over them. Cover bowl and soak chiles, stirring occasionally, until softened, about 20 minutes.
• Reserve 2 cups soaking liquid, then drain chiles in a colander. Purée chiles, reserved soaking liquid, and roasted peppers in 2 batches in a blender until smooth (use caution when blending hot liquids). Force purée through a fine-mesh sieve into a bowl, pressing on and discarding solids.
• Cook garlic, cumin, oregano, and salt in butter in a 4-quart heavy saucepan over moderately low heat, stirring, 1 minute. Add flour and cook, stirring, 2 minutes. Whisk in chile mixture and simmer, whisking occasionally, until reduced to about 2 1/2 cups, 15 to 20 minutes. Add vinegar and salt to taste. Keep sauce warm, covered.
• Grill steaks:
• Prepare grill for cooking. If using a charcoal grill, open vents on bottom of grill, then light charcoal. Charcoal fire is medium-hot when you can hold your hand 5 inches above rack for 3 to 4 seconds. If using a gas grill, preheat burners on high, covered, 10 minutes, then reduce heat to moderately high.
• Pat steaks dry and season with salt. Grill steaks, uncovered, on lightly oiled grill rack, turning over once, 6 to 8 minutes total for medium-rare. Transfer to a platter and let stand, loosely covered with foil, 5 minutes.
• Serve steaks with sauce.