The phrase "purple frosting" refers to a sweet, colored substance that is typically used to decorate cakes or pastries. It is usually purple in color and has a soft, sugary texture. Full definition
To make different colors of purple frosting, I just mixed different amounts of purple food coloring into the icing each time I refilled my icing bag. (mommyscene.com)
A rich dark chocolate cupcakes covered with naturally purple frosting fur, and googly green eyes made out of grapes. (cleaneatingrecipes.com)
These Vegan Halloween Cupcake Monsters are more sweet than spooky with a dark chocolate cupcake, naturally purple frosting fur, and big green grape eyes! (feastingonfruit.com)