White Wine Sauce - cooking recipe

Ingredients

3 Tbsp. butter
3 Tbsp. flour
1/2 tsp. salt
cracked pepper
1 1/2 c. milk, scalded
1 egg yolk, beaten
1/4 c. white wine

Preparation

Melt butter and stir in flour.
Add salt and pepper; add milk, stirring constantly until thickened.
Remove from heat.
Add 2 tablespoons hot sauce to the cold beaten egg yolk, then return this to the hot mixture.
Stir briskly.
Add wine and also stir briskly.