To prepare a Sues hot fudge sauce recipe, first you need to prepare the ingredients. First, you'll need 2 cups granulated sugar, 1 cup evaporated milk, and 1 teaspoon vanilla extract. You can also use instant coffee if you don't have instant milk. Then, add 3 tablespoons of vegetable oil to the saucepan and heat it over medium heat until the oil is shimmering and the sugar is dissolved. Once the mixture begins to boil, remove it from the heat and allow it to cool for 5 minutes, then stir in 1 tablespoon of cornstarch. Now that the syrup has cooled, pour it into jars and store in an airtight container in the refrigerator for up to 3 months.