1 ½ cups brown sugar, 1 cup cocoa powder, ¼ teaspoon salt
When the mixture begins to develop small bubbles, slowly whisk in the cream.
1 ¼ cups heavy cream
Stir until the mixture develops small bubbles again. Remove from heat and stir in vanilla. The mixture will be very thin and runny.
2 teaspoons vanilla
Pour into a small bowl and place in the refrigerator. Stir every 30 minutes until the mixture has thickened, about 1 ½ - 2 hours.
Use when the ganache is spreadable, or cover and keep refrigerated for 3-4 days. If the mixture is too thick to spread, leave at room temperature for 30 minutes. Stir before using.
Notes
When the ganache is finished, it will be very thin and runny. It will begin to thicken while it cools.
Stir the cooling ganache about every 30 minutes until the desired texture is achieved.
If the mixture becomes too thick, place it at room temperature for 30 minutes.