McDonald’s is bringing back its beloved Shamrock Shake with the help of an old friend. The minty green milkshake will return to restaurants on Monday, Feb. 10 — and the chain’s Uncle O’Grimacey character is returning after a decades-long hiatus to help kick off the annual “Shamrock Season.”

Who needs Groundhog Day—the Shamrock Shake’s return means spring has begun. Starting February 10 and running through March, the famously green vanilla-based mint milkshake topped with whipped cream will be available for purchase,

McDonalds is bringing back two iconic favorites to celebrate the 50th anniversary of its Ronald McDonald House charity. The Shamrock Shake has returned to mark the occasion along with one of the brand’s long-lost family members,