Hot Fudge Sauce

from the Better than Store-Bought cookbook

¾ stick (6 Tbsp) unsalted butter
6 oz. (6 squares) unsweetened baking chocolate
1 cup boiling water
2 cups sugar
½ cup light corn syrup
¼ tsp salt
1 ½ tsp vanilla extract

Combine the butter and chocolate in a heavy saucepan and stir over low heat until melted. Stir in the water, sugar, corn syrup, and salt.

Turn the heat to medium and bring the mixture to a boil, stirring. Boil the sauce gently, without stirring, for about 8 to 9 minutes, or until it is thickened and smooth. Stir in the vanilla extract and serve hot. (Or you may store it in the refrigerator for months) (as if it would last that long).

TO REHEAT: Set the jar in a saucepan of cold water. Bring water slowly to a simmer, stirring the sauce until it is hot enough.