Step 1

Prepare a stand mixer with a whisk attachment.

Step 2

Whip butter until pale, fluffy, and creamy.

Step 3

Reduce speed to low and add in powdered sugar 1 cup at a time until well blended. Increase speed to medium and whip for 3 minutes.

Step 4

Add clear vanilla and 2 Tbsp cream and continue to whip on medium for 1 minute.

Step 5

Add more cream as needed until desired consistency is reached (I added all 4 Tbsp).

Step 6

Dip a toothpick into a tiny bit of violet color gel and add it to the buttercream. Whip to incorporate.

Step 7

Add more violet if needed and/or some bright white color gel. Whip until the frosting is smooth and silky.