To celebrate, McDonald's added a brand-new dessert to the menu, the Oreo Shamrock McFlurry. The Oreo Shamrock McFlurry features Oreo cookie pieces blended into Shamrock Shake-flavored soft serve.
The shake was invented by McDonald's franchise owner Hal Rosen in 1967, and was introduced at select restaurants in 1970.
"We've been serving the iconic cult-favorite Shamrock Shake for 50 years, and it's become synonymous with McDonald's ever since," Linda VanGosen, McDonald's vice president of menu innovation, said in a press release.
To celebrate the drink's golden anniversary, McDonald's introduced a new Oreo Shamrock McFlurry, which features Oreo pieces blended into Shamrock Shake-flavored soft serve. The Oreo Shamrock McFlurry is also now available at McDonald's restaurants nationwide.
"We're excited to serve up a new way to experience the one-of-a-kind Shamrock flavor in our new Oreo Shamrock McFlurry," VanGosen said. "Our chefs worked to get the perfect balance of Oreo cookies and mint for this new delicious dessert."
The Shamrock desserts will be available through March 22.
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