McDonald's massively popular Shamrock Shake, which was first introduced in 1970, is back in time for St. Patrick's Day. And the best part? Uncle O’Grimacey, who hasn't been seen in literal decades, is ...
McDonald's Shamrock Shake, a milkshake made with vanilla soft-serve ice cream, artificially flavored minty green syrup and whipped topping, is expected to return the fast food chain's menu soon.