Ingredients
Instructions
- Mix sugars, cornstarch, salt, and cocoa in a medium sauce pan.
- Whisk in the water.
- Heat over medium until it gets thick and starts to boil. Boil for 1-2 minutes.
- (Make sure you don't boil too long, or it will set like taffy.)
- Remove from heat and stir in oil and vanilla. Cool and spread on cooled cake.