$0.25 from each Shamrock Shake sold will be donated to Ronald McDonald House Charities, which, like Uncle O’Grimacey himself, is celebrating 50 years of existence. In honor of the monster and ...

According to McDonald’s enthusiast @markie_devo on Instagram, the Shamrock Shake has already been spotted in Iowa and in Brooklyn, New York. One commenter added that they’d seen a Shamrock ...