Mustard Sauce For Ham(Use With Ham Loaf.) - cooking recipe

Ingredients

2 Tbsp. dry mustard or more if needed
2 Tbsp. flour
2 Tbsp. sugar
1 to 2 Tbsp. melted butter
heavy cream or half and half
1 egg yolk
1/4 c. cider vinegar

Preparation

Blend melted butter with first 3 ingredients. Whip in 1 cup heavy cream or half and half.
Cook until thickened.
Remove from heat and add 1 egg yolk, mixing constantly until blended.
Add 1/4 cup warmed cider vinegar and allow to cool.
Serve at room temperature.