MUSTARD SAUCE FOR SEA FOOD

2 Tbsp. cornstarch
4 Tbsp. sugar
4 Tbsp. dry mustard
1 Tsp. salt
1/4 Tsp. cayenne
6 Tbsp. vinegar
2 cups water
4 Tbsp. butter

Mix together 2 Tbsp. cornstarch, 4 Tbsp. sugar, 4 Tbsp. dry mustard, 1 Tsp. salt, 1/4 Tsp. cayenne. Add 6 Tbsp. vinegar and 2 cups water, 4 Tbsp. butter. Cook over hot water stirring constantly, until it thickens. Fine served hot over any boiled fish. Add to it some capers and serve, hot of course, over crab cakes or devilled crabs.