Spray cooking spray or take 1 Tablespoon butter and grease bottom half of instant pot.
Wash and scrub potatoes. Cut in half. Add to instant pot.
Slice andouille sausage. Add to instant pot.
Add 3 tsp Old Bay Seasoning and hot sauce to pot, stir everything together.
Now add the beer and corn on top.
Select pressure cook (high) custom time for 5 minutes. When finished cooking, quick-release pressure according to manufacturer's instructions.
Add shrimp to the pot. (It will be pretty full at this point). Select pressure cook (high) custom time for 1 minute this time. When finished cooking, quick-release pressure according to manufacturer's instructions.
For the delicious garlic butter sauce to dip your shrimp in:
Melt butter in small skillet over medium low heat. Stir in garlic and remaining 1 tsp Old Bay seasoning, about 1-2 minutes.
Serve shrimp mixture immediately drizzled with butter, garlic sauce, and garnish with parsley and lemon, if desired.