In a mixer bowl, blend sour cream, mustard, pepper, salt, garlic
powder and Worcestershire for 2 minutes at low speed. Add mayonnaise.
Blend 1/2 minutes at low speed and 2 minutes at medium speed. By
hand, crumble cheese into mixture. Blend at low speed no more than 4
minutes. Refrigerate 24 hours before use.
Yield: 2 1/2 cups.
From the Chart House, St. Augustine,
in "Famous Florida Restaurants & Recipes."