Cold Deviled Eggs - cooking recipe

Ingredients

4 hard-cooked eggs
1 Tbsp. butter
1/2 tsp. dry mustard
1/2 tsp. salt
1/2 tsp. vinegar
1/2 tsp. Worcestershire sauce

Preparation

Slice eggs in two lengthwise and remove yolks.
Chill the whites.
Cream yolks with ingredients.
Roll into balls and replace in each half egg white.