Shamrock Shakes return to some McDonald's restaurants

It's just over a month away from Saint Patrick's Day, and that means it's Shamrock Shake season.

The seasonal treat is back at some McDonald's restaurants.

It's a combination of vanilla soft-serve, a green minty syrup and whipped topping.

Not all restaurants plan to carry the dessert, so McDonald's is launching a "Shamrock Shake finder" on its app.

The shake will be available through March 24th.
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