2 pounds small red potatoes – scrubbed (halve any larger than 2 inches)
1.5 pounds smoked sausage – cut into 1-inch pieces
6 ears corn on the cob – husked and cut into 2–3 inch pieces
2 pounds shell-on large shrimp – rinsed
unsalted butter – melted (for serving)
cocktail sauce – for serving
hot sauce – for serving
lemon wedges – for serving
Instructions
Fill a large stockpot with the water. Add the Old Bay and kosher salt. Squeeze the lemons into the pot, then drop in the lemon halves along with the quartered onions. Bring to a rolling boil over high heat, 10–15 minutes.
Add the red potatoes and boil until just tender when pierced, 10–12 minutes.
Add the smoked sausage and boil to heat through and season the broth, 5 minutes.
Add the corn and cook until bright and crisp-tender, 5–7 minutes.
Add the shrimp, stir, and cook until pink, opaque, and just curled, 2–3 minutes. Do not overcook.
Drain the pot through a large colander. Discard the lemon halves. Spread the shrimp, sausage, potatoes, corn, and onions onto newspaper-lined tables or large platters.
Serve hot with melted unsalted butter, cocktail sauce, hot sauce, and lemon wedges.