Step 1

Add 12 cups of water to a large stock pot and bring to a rolling boil.

Step 2

Add lemon wedges, garlic salt, and Old Bay. Whisk to combine.

Step 3

Add potatoes, allow to cook for 4-5 minutes.

Step 4

Add crab legs and cook 3 minutes.

Step 5

Add corn, mussels, and lobster. Cook 3 minutes more.

Step 6

Add andouille sausage and shrimp. Stir everything together and turn off heat. Allow to sit for 3-4 minutes.

Step 7

Drain pot, reserving 1 1/2 cups of the broth.

Step 8

Add 1 tablespoon butter to the hot reserved broth and allow butter to melt.

Step 9

Serve seafood boil with buttered broth.