Using a 10-gallon pot, fill with water 3/4 full, add crawfish boil seasoning and bring to boil.
Add 5 lbs of potatoes, 5 ears of corn, garlic, lemons and 2 tbs Sriracha sauce.
Cook 1 minute per pound of potatoes. Control heat to prevent boil over.
Add 10 lbs of crawfish and boil for another 2-3 minutes. Turn off the heat.
Let crawfish soak, covered, for 15-20 minutes.
At this point, if you are using a basket, remove the basket and let the liquid drain off, back into the boil pot.
Dump the contents of the basket onto the serving table and sprinkle with 2 tbs of Cajun seasoning.
Repeat the process, starting with adding potatoes and corn. Each batch will get progressively spicier, so be careful.