Ingredients:
- 1/2 cup (1 stick / 113 g) Unsalted Butter, Cubed
- 1/2 cup (50 g) Unsweetened Cocoa Powder, Sifted
- 3 cups (600 g) Granulated Sugar
- 1 cup (240 ml) Whole Milk or Heavy Cream
- 1/4 teaspoon Salt
- 1 teaspoon Pure Vanilla Extract
- 1–2 teaspoons Hot Water (Optional, for adjusting consistency)
Instructions:
- Prep Ingredients: Sift the cocoa powder to remove lumps. Measure all remaining ingredients accurately.
- Combine Base: In a heavy-bottomed saucepan, combine the granulated sugar, whole milk, cubed butter, sifted cocoa powder, and salt.
- Melt and Dissolve: Place the saucepan over medium heat. Stir constantly until the butter is completely melted and the sugar is mostly dissolved (about 3–5 minutes). Do not let it boil yet.
- Bring to a Boil: Increase the heat slightly and bring the mixture to a full, rolling boil, stirring just enough to prevent sticking.
- Cook to Temperature: Stop stirring once the mixture is boiling vigorously. Allow it to boil, undisturbed, until the temperature reaches 235°F (113°C) on a candy thermometer (the soft-ball stage).
- Remove from Heat and Cool: Immediately remove the saucepan from the stove. Add the vanilla extract, but DO NOT stir the mixture yet. Pour the hot syrup directly into a large mixing bowl or stand mixer bowl.
- Critical Cooling Step: Allow the syrup to cool completely, undisturbed, until it reaches lukewarm (about 110°F or 43°C). This takes approximately 20–30 minutes.
- Beat the Icing: Once cooled, begin beating the mixture vigorously using a hand mixer, stand mixer (with the paddle attachment), or strong whisk for 5–10 minutes.
- Watch for Transformation: Continue beating until the mixture loses its shiny appearance, becomes opaque, and rapidly thickens into a creamy, glossy icing.
- Adjust Consistency: If the icing sets too stiffly, beat in 1–2 teaspoons of hot water or hot milk until the desired silky, spreadable consistency is reached.
- Apply Immediately: Use the icing immediately, as it will continue to set as it cools.