This 4-pound bag contains U-12 farm-raised white shrimp, sold previously frozen and thawed for convenience in Costco's fresh seafood section. The "U-12" designation means fewer than 12 shrimp per pound, making these extra-large to colossal shrimp — among the biggest sizes available at retail.

Farm-raised white shrimp (Litopenaeus vannamei) are the most commonly farmed shrimp species in the world, typically sourced from aquaculture operations in countries such as India, Thailand, Ecuador, or Vietnam. These shrimp offer a mild, slightly sweet flavor with a firm, meaty texture well suited to grilling, sautéing, boiling, steaming, or baking.

At U-12 size, each shrimp is substantial enough to serve as a centerpiece protein. They pair well with garlic butter, lemon, Old Bay seasoning, or cocktail sauce. The large size also makes them ideal for skewering, stir-fries, or shrimp cocktail presentations. Previously frozen shrimp can be safely stored in the freezer after purchase if not used immediately.