- 4 (1 ounce) squares unsweetened chocolate
- 1/2 cup butter
- 3 cups white sugar
- 1 teaspoon vanilla extract
- 1/2 teaspoon salt
- 1 (12 fluid ounce) can evaporated milk
- Melt the chocolate and butter in a heavy pot over low heat, stirring constantly. Gradually stir in the sugar, vanilla extract, salt, and evaporated milk. Cook and stir until the mixture is thickened, 5 to 7 minutes.