When should I add the shrimp to avoid overcooking?
Add shrimp in the final 20–30 minutes of cooking on low, or the last 10 minutes on high. Shrimp cooks quickly and becomes rubbery if overcooked; it's done when pink and firm.
Can I make this boil ahead of time?
Yes. Prepare the slow cooker base with potatoes, sausage, corn, and broth up to 24 hours ahead and refrigerate. Cook as directed, adding shrimp only at the end.
What can I substitute for andouille sausage?
Kielbasa, smoked chorizo, or spicy Italian sausage work well. Adjust seasoning to taste since other sausages may differ in heat and smokiness.
How do I store leftovers?
Refrigerate in an airtight container for up to 3 days. Reheat gently on low heat; do not microwave shrimp as it dries out.
Can I scale this recipe up for a crowd?
Yes. Double the ingredient amounts and use a large slow cooker (6–7 qt). Cooking time remains the same; check potatoes for doneness and adjust shrimp timing accordingly.