That would have been "Uncle O'Grimacy"! He was green and long-haired fuzzy compared to the short purple fuzz of Grimace. He also wore a green bowler with a shamrock on it. Those shakes were the best back in the day. When you can find them today, they are very poorly blended and don't taste very good. Too bad.

I remember Shamrock Shakes! I loved them! I haven't seen them advertised for ages....

Difficult to find. They are still around but seems like in very limited, rural markets. In 2009 they were in all four of the McDonald's here in Marietta, Ohio. It may depend on who owns the franchise as far as actually finding a Shamrock Shake. When I do find them I might buy 5-6 during the promotion. I also found them in Nassawadox, VA in 1995; Mt. Orab, OH around 2003 and St. Mary's, OH around 2005. Never saw them in a major city market myself.

I just saw them advertised at an LA area McDonald's

The McD's in my hometown of O'Neill, Nebraska (The Irish Capital of Nebraska) always has them for St. Patrick's Day (March 17) and for a few weeks afterward. Yum!

I remember the original Shamrock Shake was pistachio flavored. Was it a regional thing? I live in the East Coast.

You can get them out here in Vegas starting around Valentines Day.

It's March!That means it's time for McDonald's Shamrock shakes, green Hostess SnoBalls (if you can find) and March Madness! Go Zags!♧

From the Saturday morning cartoon vault: An early TV commercial for McDonalds Shamrock Shakes. The "Evil" Grimace, usually purple, dreams he turned green! When he wakes up, Ronald and some kids invite him to join them for a Shamrock Shake. This aired on "Hot Dog," the funny, yet educational kids show, over NBC (2/27/71). Show featured Jonathon Winters, JoAnne Worley, Woody Allen and Frank Buxton.

Another edition of Lambert's Local Line. A TV commercial block from Chicago's WGN, which included a McDonald's spot that pressed the "Get a Meal For Under 75 cents" tag, with choice of soft drink or shake ("For Limited Time, Shamrock Shakes"). This aired on "Family Classics" (movie anthology) in 1971. One of Channel Nine's resident announcers, Cliff Mercer (known for his deep, bass voice) did commercial voice-overs during the show (also on radio, 1967-88). During the 1980s, Mercer's unique voice was mocked by radio personality Garry Meier, while he worked as partner-in-crime to the controversial Steve Dahl, from 1979 to 1995 (the duo broke up after Dahl insulted Meier's fiancé on the air). Afterward, Meier had successful stints at WLS and WGN radio, while Dahl faded into oblivion, via the burn-out route.

McDonald's Shamrock shakes turn 50 years old this month! Might go get one today and put a lil Bailey's Irish Cream it it! ♧♧♧♧

💚🍀☘ McD's Shamrock shakes are back wheeee!! ☘🍀💚

Hi, I ALSO remember the Shamrock Shake being pistachio flavored, but I remember it growing up in Hawaii in the late 90s/early 2000s, and I CANNOT find any evidence it ever used to be pistachio flavored. This mystery has been driving me crazy for years.

Mint. Not pisstachio. Mint.

🍀💚🍀💚🍀💚 Time for those Shamrock shakes 🍀💚🍀💚🍀💚

I also remember the green shakes being pistachio and they were the best.

I also remember the shamrock shakes being Pistachio !! No one believes me so I’m glad to see others on here say they remember too! They were way better!

I also recall, not long after they first came out, them being said to be pistachio, but I hadn't tried one, so I had since wondered if it was only a rumor. I remember thinking, "yuck!" when I first heard that, but later my mom made some pistachio-pineapple pie, and I thought, "this is pretty good", so I can imagine it being a thing.