Potato Chip Cheese Ball

1 1/4 cups crushed sour cream and onion potato chips
1 pound cheddar cheese, grated
1/2 pound cream cheese, softened
1/4 pound roquefort cheese, crumbled
2 tablespoons onion flakes, or freshly grated onion
2 teaspoons worcestershire sauce
1/4 teaspoon cayenne pepper

Blend cheeses together with pastry blender. Add onion flakes, worcestershire sauce and pepper. Mix in 1/4 cup of the crushed potato chips. Mix well. Shape into a ball and roll in remaining potato chip crumbs. Refrigerate overnight and serve cold.