Chocolate sauce is thin and creamy, but hot fudge is thick and sticky, making it perfect for topping ice cream.

1. In a saucepan over medium-high heat, heat and stir together the sugar, corn syrup, and water. Bring to a boil. Boil for 5 minutes.

2. Stir the cocoa powder and chocolate chips into the sugar syrup until the chips are completely melted.

3. Remove from heat, strain, and refrigerate.