The Shamrock Shake is back. Here’s why you can’t get it year-round

Temporary offerings like the Shamrock Shake assist McDonald’s develop buzz and generate sentimental clients.

McDonald’s ( MCD ) initially began offering the beverage in 1970. For many years, the hamburger chain has actually restored the initial in addition to variations of the shake, like a “Shamrock Sundae” in 1980 and a chocolate variation in 2017. It initially began offering the product nationally in 2012.