1In a stand mixer fitted with the paddle attachment, whip the butter on medium speed until creamy and light in color.
2Add half of the powdered sugar and mix on low until just combined, then add the rest of the powdered sugar.
3With the mixer still in the off position, sift in the black cocoa powder and add the vanilla, milk, and salt. Mix on low until all ingredients are thoroughly combined, scraping down the bowl and paddle as needed.
4Place the buttercream in an airtight container and allow the color to deepen for 24 hours or more.
Ingredients
1 cup unsalted butter, room temp
2 1/2 cups powdered sugar
1/2 cup extra dark black cocoa powder
1 tsp pure vanilla extract
2 tbsp whole milk, room temp
1 pinch salt
Equipment
stand mixerpaddle attachmentairtight container
Tips
I use a brand called The Cocoa Trader that I get on Amazon. It’s the darkest black cocoa powder I’ve seen so far!!