½ cup butter
2 (1-ounce) squares unsweetened chocolate
2 cups sugar
1 cup evaporated milk
½ cup light corn syrup
1 teaspoon vanilla extract
⅛ teaspoon salt
Place the butter in a medium saucepan with the chocolate. Melt over low heat. Add the sugar, evaporated milk, corn syrup, vanilla, and salt. Bring the mixture to a boil over medium heat, stirring constantly. Boil for 1 ½ minutes. Serve warm or cold. Store covered in the refrigerator for up to 2 weeks.
Makes 3 cups.