USDA Choice beef outside skirt steak, sold by the pound at Costco. The outside skirt is a premium cut sourced from the plate of the cow near the diaphragm muscle. It is the preferred variety of skirt steak, being wider, more evenly-shaped, and more supple than the inside skirt, making it easier to cook while remaining tender and juicy. USDA Choice grade indicates high-quality beef with good marbling, suitable for dry-heat cooking methods. This versatile cut is ideal for carne asada, fajitas, tacos, and grilling. The distinctive vertical grain running along the length of the steak creates a pleated appearance. For best results, cook over high heat to medium-rare or medium doneness and slice against the grain to maximize tenderness.