A seasonal favorite will be back on the menu next week. Here's what we know about McDonald's Shamrock Shake and Oreo Shamrock McFlurry.

McDonald's announced when the Shamrock Shake will return. Here's what to know including what it tastes like, ingredients and how many calories it has.

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.”

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.

It's soon to be Shamrock Shake season. McDonald's Shamrock Shake, a milkshake made with vanilla soft-serve ice cream, artificially-flavored minty green syrup and whipped topping, will return to restaurants on Monday,

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

McDonald's brings back Uncle O'Grimacey, the beloved green mascot, to celebrate the return of the Shamrock Shake.

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

McDonald’s is days away from officially launching the return of a seasonal favorite: the Shamrock Shake. The celebratory St. Patrick’s Day drink will arrive on Feb. 10, just over a month before the holiday arrives.

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,