Tony Corabel

When Does The Shamrock Shake Return 2025. Ever since the minty shake debuted in 1970, fans have clamored for its seasonal st. Patrick’s day drink will arrive on feb.

Mcdonald’s is bringing back the mascot uncle o’grimacey, grimace’s uncle, to promote the seasonal milkshake. From february 10 through march 23, $0.25 from each shamrock shake sold will be donated to ronald mcdonald house charities, which, like uncle o’grimacey himself, is.