Ingredients

1/4 cup white-wine vinegar

1 tablespoon finely chopped shallot

2 tablespoons finely diced, peeled cucumber

Coarsely ground black pepper

1/3 cup ketchup

1 tablespoon prepared horseradish

1/4 teaspoon finely grated orange zest

4 jumbo shrimp, steamed, peeled, and deveined

4 oysters, shucked and in shells

1 small lobster tail, steamed and cut in half

Lemon wedges, for garnish

Preparation

Stir together vinegar, shallot, cucumber, and 1/4 teaspoon pepper in a small bowl for mignonette. Stir together ketchup, horseradish, and orange zest in another small bowl for cocktail sauce. Refrigerate sauces until chilled, at least 1 hour, and up to 1 day.

Place crushed ice on a tray, and arrange seafood, sauces, and lemon wedges on top.