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.”

Grimace and Uncle O’Grimacey are welcoming the Shamrock Shake back to restaurants nationwide on Monday, Feb. 10

The beloved Shamrock Shake is coming back to McDonald's, along with a McDonald's character no one's seen since the 1980's: Uncle O'Grimacey.

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,

McDonald’s fans, brace yourselves because the food chain is about to reintroduce its seasonal classic—the Shamrock Shake.

Across the United States, McDonald’s hopes to raise $5 million through Shamrock Shake donations, which could provide 50,000 overnight stays for families staying at RMHC programs. Each chapter provides care, comfort and support to families, allowing them to heal together while their child receives medical care.

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,

McDonald's Shamrock Shakes are back in Michigan, with upcoming Ronald McDonald House Charities donations. Here's what to know.