Step 1

Combine water, dry crab boil, and seafood seasoning in a multi-functional pressure cooker (such as Instant Pot®). Add live crawfish. Close and lock the lid. Select high pressure according to manufacturer's instructions; set timer for 0 minutes. Allow 15 minutes for pressure to build.

Step 2

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 2 minutes. Carefully pour crawfish and the liquid into a large bowl and let sit for 30 minutes to soak while you prepare the rest of the meal.

Step 3

Add potatoes, corn, andouille sausage, and 1 tablespoon seafood seasoning to the pot. Pour in water and stir until evenly combined. Close and lock the lid.

Step 4

Select high pressure according to manufacturer's instructions; set timer for 5 minutes. Allow 15 minutes for pressure to build.

Step 5

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 2 minutes. Divide the mixture between 4 plates and serve with crawfish.