Wagyu Beef Inside Skirt Steak Inside skirt comes from the flank—it's narrower and thinner than the outside skirt and comes with the membrane removed. Known for its robust flavor profile. Rich flavor with a loose grain and abundant intramuscular fat. Marinate and grill hot for fajitas or use for stir-fry. Perfect for grilling and searing. Texture picks up marinates and seasonings.