Shrimp boil

My favorite or at least one of my top 5 craves are shrimp boils.  The recipe is simple and the process takes about 30 minutes to cook.

2 lemons, halved, plus wedges for serving
1/2 cup Old Bay Seasoning
8 cloves garlic, smashed
1 large red onion, quartered
6 links of sausages
6 sprigs fresh thyme
1 pound baby red potatoes
4 ears corn, husked and snapped in half
1 1/4 pounds large shrimp, unpeeled
2 tablespoons unsalted butter
*Hot sauce the more the tastier.