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?

Despite his hiatus, the green, furry icon was never forgotten. Uncle O’Grimacey earned his own merch line, called the Uncle O'Grimacey collection, which includes Shamrock Season pins, a crewneck and, even, a plain white tee that says “Who’s your uncle?” alongside an image of the uncle himself.

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

From the various flavors that have been available to the struggles of unveiling it nationwide, here's what you should know about McD's minty green shake.

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.

Enjoy a Shamrock Shake: For every Shamrock Shake purchased from Feb. 10 to Mar. 23 at participating McDonald's, 25 cents will be donated to RMHC with a goal of raising $5 million, which could provide 50,000 overnight stays for families staying at RMHC programs.

Shamrock Shakes are back at the restaurants. The Oreo Shamrock McFlurry has made a limited time return, as well. Start the day smarter. Get all the news you need in your inbox each morning. Shamrock Shakes sales do some good.