Deviled Burgers

1 pound ground beef
1 tsp. salt
1/4 tsp. pepper
2 tsp. prepared mustard
2 tsp. horseradish
1 Tbsp. minced onion
2 tsp. Worcestershire sauce
2 Tbsp. catsup

Mix all ingredients and shape into 4 patties. Great for cooking on the grill.