Ingredients

  • 2 cups water
  • 1 pound small shrimp, peeled and deveined
  • 1 pound scallops (whole bay scallops or quartered sea scallops)
  • 1/2 head cauliflower, divided into florets
  • One 12-ounce basket cherry tomatoes, halved
  • 1/4 cup plus 2 tablespoons pitted black olives, quartered, or 3 tablespoons capers, drained
  • One 8-ounce can sliced water chestnuts, drained
  • 2 cups mayonnaise
  • 1/2 cup horseradish sauce
  • 2 tablespoons dry mustard
  • 1 teaspoon fresh lemon juice
  • 1/2 teaspoon salt
  • 1/2 teaspoon ground black pepper

Method

  • Bring the water to a simmer in a 2-quart saucepan.
  • Reduce the heat to low and add the shrimp.
  • Cook for 1 minute.
  • Add the scallops and cook for 1 minute more.
  • Drain, transfer to a large bowl, and let cool.
  • Meanwhile, combine all ingredients for the sauce in a small bowl.
  • Add the cauliflower, tomatoes, olives or capers, and water chestnuts to the shrimp and scallop mixture.
  • Add the sauce and toss to coat.
  • Serve immediately or cover and chill in the refrigerator.