Is Grimace Shake Available Right Now 2025. The grimace shake will be available for two weeks from december 11, 2025 (until december 25) or while stocks last, so you'll have to be quick to avoid missing out. The milkshake was originally created last year to honour the chain’s purple mascot, grimace.

Snack ($2), small ($4.19), medium ($4.89) and large. The milkshake was originally created last year to honour the chain’s purple mascot, grimace.