McDonald’s is celebrating Grimace’s birthday with a brand new Grimace Shake!

The Grimace Shake is described as a shake with whipped topping and a flavor of purple berries. The shake will be offered both on its own and as a component of Grimace’s Birthday Meal, which also includes medium fries and your choice of a Big Mac or 10-Piece McNugget.

This seems to be available for a brief period starting on June 12 at retailers.

Will you give it a shot?