Chocolate Sauce - cooking recipe

Ingredients

1 1/2 c. sugar
1/2 c. cornstarch
1/2 tsp. salt
2 c. boiling water
2 Tbsp. butter
1 tsp. vanilla
1/3 c. cocoa

Preparation

Mix dry ingredients.
Slowly add boiling water, stirring constantly.
Add butter and vanilla.
Cook until slightly thickened.