Prepare the Broth: In a large pot, fill it halfway with water or beer and bring it to a vigorous boil. Stir in Cajun seasoning and aromatics such as sliced onions and garlic. Simmer for 5 minutes.

Cook the Vegetables: Add the potatoes and corn, cooking for 10-15 minutes until fork-tender.

Incorporate the Proteins: Add andouille sausage, shrimp, and crab clusters. Cook for an additional 5-7 minutes until shrimp are opaque.

Boil the Eggs: Prepare hard-boiled eggs in a separate pot for 10 minutes, then cool and peel.

Make Garlic Butter Sauce: In a saucepan, melt butter, sauté garlic, then stir in parsley and salt.

Serve the Boil: Drain seafood and vegetables, serve on a platter, drizzle with garlic butter, and garnish with lemon.