Shamrock Shake

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Shamrock Shake
O'Grimacey Cup.JPG
McDonald's cup featuring Uncle O'Grimacey.
Owner McDonald's
Country United States
Introduced 1970

The Shamrock Shake is a seasonal green-dyed mint flavored milkshake dessert sold at McDonald's during March to celebrate St. Patrick's Day.


The Shamrock Shake was first introduced in 1970.[1] Rogers Merchandising in Chicago created the shake. James Byrne, the executive artist at the firm, used a family recipe for the shake. Shamrock Shakes are sold at all American[2] and select Canadian stores during the months of February and March,[1] as well as in Ireland.[3]


During the 1980s, McDonald’s used the Uncle O'Grimacey character to market Shamrock Shakes, but has since phased it out.

In 1980, McDonald's introduced the Shamrock Sundae which consisted of vanilla ice cream topped with a mint green Shamrock syrup. The product was discontinued after one year due to poor sales.[2]

Yearly release dates[edit]

On February 7, 2014, Shamrock shakes were available in select NYC McDonald's locations, including 135th Street and Lenox Avenue in Harlem.


  1. ^ a b Huguenin, Patrick (2007-03-16). "Shamrock Shake Shocker: It's Disappeared!". The New York Daily News. p. 46. Archived from the original on 2009-03-16. Retrieved 2009-04-07. 
  2. ^ a b "Ultimate Shamrock Shake Guide". Gluttoner. Retrieved 18 October 2012. 
  3. ^ Associated Press (2012-02-08). "McDonald's offers Shamrock Shake nationally". Asheville Citizen-Times. Retrieved 2012-02-08. [dead link]

External links[edit]