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–+ servings
Bowl of garlic butter Cajun seafood boil sauce with a spoon, surrounded by crab legs, shrimp, crawfish, corn and lemon

Seafood Boil Sauce

Author: Olivia Stone | Home Chef
300kcal
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Prep 10 minutes
Cook 12 minutes
Total 22 minutes
Buttery, garlicky seafood boil sauce with Old Bay, Cajun spice, lemon pepper and lemon. Glossy, clingy and ready in 22 minutes for shrimp, crab and corn.
Servings 6 servings
Course Sauce
Cuisine American, Cajun

Ingredients

  • 1 cup unsalted butter (2 sticks / 227 g), divided
  • 1/3 cup yellow onion (50 g), finely minced
  • 1 head garlic (about 12 cloves / 1/4 cup), minced
  • 1 tbsp Old Bay seasoning
  • 1 tbsp Cajun seasoning
  • 1 tsp lemon pepper seasoning
  • 2 tsp smoked paprika
  • 1/2 to 1 tsp cayenne pepper to taste
  • 1 tsp garlic powder
  • 1 tbsp light brown sugar (13 g)
  • 1/2 cup seafood stock (120 ml), or water from the boil
  • 2 tbsp fresh lemon juice (30 ml)
  • 1 tbsp Louisiana-style hot sauce (15 ml)
  • 2 tbsp fresh parsley chopped

Equipment

  • Medium saucepan (2 to 3 quarts)
  • Whisk

Method

  1. Melt 2 tablespoons of the butter in a medium saucepan over medium-low heat. Add the onion and cook about 3 minutes, until soft and translucent.
  2. Add the garlic and cook 1 to 2 minutes, stirring, until fragrant and pale gold. Don't let it brown.
  3. Add the remaining butter and let it melt slowly, stirring now and then.
  4. Whisk in the Old Bay, Cajun seasoning, lemon pepper, smoked paprika, cayenne, garlic powder and brown sugar. Stir 1 minute until the butter turns deep red-orange.
  5. Whisk in the seafood stock, lemon juice and hot sauce.
  6. Simmer gently 3 to 4 minutes, whisking often, until glossy and slightly thickened.
  7. Remove from the heat, stir in the parsley and taste. Adjust with more cayenne or lemon. Toss with hot, well-drained seafood, potatoes, corn and sausage.

Nutrition

Serving0.33cupCalories300kcalCarbohydrates5gProtein1gFat31gSaturated Fat19gSodium760mgFiber1gSugar3g

Notes

Amount: about 2 1/4 cups, enough for 5 to 6 lb of seafood and sides (about 1/3 cup per person).
Seafood safety: cook shrimp, crab and lobster until the flesh is pearly and opaque.
Storage: refrigerate within 2 hours in a sealed jar for up to 4 days, or freeze up to 3 months. Rewarm over low heat, whisking.
Styles: for garlic butter, skip cayenne and hot sauce; for lemon pepper, double the lemon pepper and add zest; for Cajun, add 1 tbsp Cajun seasoning and 1/2 tsp cayenne.
Nutrition is an estimate, per serving of sauce only.

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