Deviled Eggs - cooking recipe

Ingredients

8 eggs, hard-boiled, sliced lengthwise (remove yolks)
2 Tbsp. butter
1/2 tsp. dry mustard
1/4 tsp. salt (more if desired)
3 Tbsp. vinegar

Preparation

Mix and beat butter, mustard, salt and vinegar together.
Add mashed yolks and mix well.
If mixture is dry, add enough mayonnaise to make creamy mixture.
Fill egg halves; sprinkle with paprika.