Place potatoes, sausage, onion, 3 teaspoons Old Bay seasoning and hot sauce into a 6-qt Instant Pot®. Stir until well combined. Top with corn and beer.
Select manual setting; adjust pressure to high, and set time for 5 minutes. When finished cooking, quick-release pressure according to manufacturer’s directions.
Add shrimp. Select manual setting; adjust pressure to high, and set time for 1 minute. When finished cooking, quick-release pressure according to manufacturer’s directions.
Melt butter in a small saucepan over medium low heat. Stir in garlic and remaining 1 teaspoon Old Bay seasoning until fragrant, about 1-2 minutes.
Serve shrimp mixture immediately, drizzled with butter mixture, garnished with parsley and lemon, if desired.
Notes
Know your shrimp size. Shrimp size is calculated on number of shrimp per pound. The smaller the number, the larger your shrimp. There are about 40-50 medium shrimp per pound.
Buy frozen shrimp. For superior quality and freshness, using frozen shrimp is ideal (but avoid the bags with freezer burn), opting for a quick thaw under cold running water.
Leave the shells on. The shells will protect the shrimp from overcooking, and will infuse more flavor into the boil.
Skip the water. Avoid using water for the cooking liquid. Use a light beer or a combination of beer and chicken broth for classic lowcountry flavors.
Cook in two stages. Pressure cook the potatoes, sausage and corn first, then add the shrimp last, quick-releasing immediately to avoid overcooking the shrimp.
The butter mixture is key. For restaurant-quality shrimp boil, finish the shrimp boil with a simple butter-garlic-Old-Bay-seasoning mixture just before serving.
Reheat in the oven. Leftover shrimp can be rubbery when reheated in the microwave. For best results with leftovers, reheat in the oven at 425°F, covered in aluminum foil until warmed through.