These wild-caught U-20 brown shrimp are sold by the pound from Costco's fresh seafood counter, where they have been previously frozen and thawed for convenience. The "U-20" sizing designation means there are under 20 shrimp per pound, classifying them as large to jumbo-sized shrimp ideal for grilling, sautéing, deep frying, or serving as a centerpiece shrimp dish.

Brown shrimp (Farfantepenaeus aztecus) are prized for their earthy, robust flavor and firm texture, making them a favorite in Gulf Coast cuisine. They are typically harvested from the Gulf of Mexico and Atlantic coastal waters, and are considered a sustainable wild-caught species. Their shells range from brownish-gray to greenish, and the meat turns white and opaque when cooked.

Because the shrimp have been previously frozen at sea to preserve freshness, they are best used promptly after purchase. They are sold raw and shell-on, so plan to peel and devein before cooking if desired. For best results, thaw under cold running water and pat dry before cooking.