shrimp on crackers

1 cup mayonnaise
1/2 cup parsley, chopped very fine
1/2 cup finely chopped scallions
2 tablespoons horseradish
1 (5 1/4 ounce) jar Zatarain's mustard
Dash of Tabasco? or red pepper sauce
Lemon juice, to taste
2 pounds medium shrimp, boiled, de-veined

Mix all ingredients except the shrimp. Fold shrimp in gently to prevent breaking. Marinate for 24 hours.

Serve on Ritz crackers, one shrimp to a cracker.

Serves 20.