Costco's U-4 Black Tiger Shrimp are colossal-grade farm-raised shrimp, with the "U-4" designation meaning under 4 shrimp per pound — among the largest shrimp available at retail. Sold fresh from the seafood counter by the pound, these shrimp were previously frozen to preserve peak quality and are thawed for display. Black tiger shrimp (Penaeus monodon) are prized for their distinctive dark striped shells, firm texture, and sweet, mild flavor that holds up well to grilling, sautéing, steaming, and broiling.

Due to their extraordinary size, U-4 black tiger shrimp are ideal for impressive presentations — grilled whole, butterflied and broiled, or served as a showpiece appetizer. The large size also makes them easy to peel and devein. Farm-raised shrimp are typically shell-on and deveined or easy-peel, with the tail on.