With anything chocolate, you want to use the best chocolate you can and, of course, the chocolate with the flavor you like most.
You can use the sauce as soon as it’s made or let it cool and then refrigerate it. Covered well (I put a piece of plastic wrap against the surface), it will keep in the fridge for weeks. Reheat it gently (in a double boiler, in a saucepan placed over the lowest possible heat or in spurts in a microwave oven) before spooning it over your ice cream.
HOMEMADE HOT FUDGE SAUCE
Makes 1 3/4 cups
3/4 cup heavy cream
1/3 cup light corn syrup
1/3 cup light brown sugar
1/4 cup unsweetened cocoa powder
1/4 tsp salt
6 ounces semisweet chocolate, very finely chopped
3 tablespoons butter, cut into bits
1 teaspoon pure vanilla extract
Bring the cream, corn syrup, sugar, cocoa and salt to a boil over medium heat. Lower the heat and simmer, stirring occasionally, for 3 minutes. Off heat, stir in the chocolate and butter. Return to a simmer for 1 minute more, then stir in the vanilla. Pour into a heatproof jar and use now or cool, cover tightly, chill and reheat very, very gently before serving.