1/2 cup chopped red onion
1 cup seeded, chopped cucumbers (peel the skin if it's bitter)
2 teaspoons prepared horseradish
2 teaspoons mustard
4 tablespoons mayonnaise
1 tablespoon chopped fresh dill
Salt and black pepper to taste
Put the crayfish tails, red onion and cucumber in a bowl. Mix the horseradish, mustard and mayo together, then mix into with the crayfish. Stir in the dill and add salt and black pepper to taste.