01 -
Combine cinnamon, ginger, cardamom, and allspice in a small bowl. Mix thoroughly to create approximately 2 1/8 teaspoons of chai spice blend.
02 -
Beat softened butter in a large bowl until creamy, approximately 2 minutes. Gradually add 5 1/2 cups of powdered sugar and mix until incorporated.
03 -
Add heavy cream, chai spice mix, vanilla extract, and salt to the butter-sugar mixture. Beat on low speed for 30 seconds to combine, then increase to high speed and beat for 2 minutes until light and fluffy.
04 -
If buttercream appears curdled, add more powdered sugar. If too thick, incorporate additional heavy cream 1 teaspoon at a time. Taste and adjust salt if needed.