Place live crawfish in a large bucket or cooler and cover with water.
Stir gently and remove any dead crawfish that float to the top—they should be discarded.
Drain and repeat the process at least three times or until the water runs clear.
Prepare the boil water
Fill a large stockpot halfway with water and set it on a propane burner.
Add the Crawfish & Crab Boil seasoning and turn the heat on high.
Squeeze the juice from the lemons into the water, then toss in the lemon halves.
Add onions, garlic, and potatoes, then bring the water to a boil for 15-20 minutes until potatoes start to soften.
Cook the crawfish
Add the sausage and crawfish, cover the pot, and boil for 5 minutes.
Turn off the heat.
Add the corn and Brussels sprouts, then cover the pot again. Let everything soak for 30-45 minutes, allowing the crawfish to absorb all the seasoning.
Serve
Once soaked, remove the basket from the pot and dump the crawfish onto a newspaper-covered table for serving.
Alternatively, transfer the crawfish to a dry cooler to keep them warm until ready to serve.
Cajun crawfish dipping sauce
In a small bowl, mix together mayonnaise, ketchup, lemon juice, Cajun seasoning, horseradish, and garlic powder until smooth.
Serve alongside the crawfish for dipping.
Notes
What ingredients are in Louisiana seasoning?
I used a spice blend from Louisiana Fish Fry, which includes a blend of traditional ingredients like garlic, onion, paprika, and lemon. If you want to try making your own, you can go with:
½ cup kosher salt
¼ cup paprika
2 tbsp cayenne pepper (adjust for spice preference)
2 tbsp black pepper
1 tbsp white pepper
1 tbsp garlic powder
1 tbsp onion powder
1 tbsp dried thyme
1 tbsp dried oregano
1 tbsp celery seed
2 tsp mustard seeds (or 1 tsp ground mustard)
2 tsp bay leaves, crushed
1 tsp crushed red pepper flakes (optional, for extra heat)
1 tsp ground cloves or allspice (optional, for depth)