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.”

Well, not literally, but the arrival of spring signals the return of this iconic St. Patrick's Day treat. If you're feeling lucky that this treat is returning to popular chain restaurant near you, did you know that you can make this frozen favorite at home -- any time of year for a fraction of the cost?

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.