01 - Fill a large stockpot (at least 12-quart) with 8 quarts water. Add Cajun seasoning, kosher salt, black peppercorns, bay leaves, paprika, hot sauce, and lemons. Squeeze lemon juice into the water, then add the lemon halves. Bring to a rolling boil.
02 - Add potatoes, onions, and garlic to the boiling pot. Cook for 10 minutes until potatoes begin to soften.
03 - Add corn pieces and sliced Andouille sausage to the pot. Continue boiling for 10 minutes to ensure vegetables are tender and sausage is heated through.
04 - Add live crawfish to the pot. Stir thoroughly to submerge, cover with lid, and cook for 5–7 minutes until crawfish shells turn bright red.
05 - Turn off heat and stir in butter. Allow crawfish to soak in seasoned water for 10–15 minutes to absorb maximum flavor.
06 - Using slotted spoon, transfer crawfish, potatoes, corn, sausage, onions, and garlic to large serving trays or spread directly onto newspaper-covered table. Sprinkle with additional Cajun seasoning if desired.