Five Guys Extends Milkshake Mix-In Test
By Caitlin Gooch • August 15, 2014
Five Guys has made its milkshake test official and has added a social media promotion to support it. The chain is testing vanilla shakes with 10 mix-in choices. Customers can upload photos of themselves and their shake creation and also share it on Twitter with a #ShareYourShake hashtag. Every Friday the chain will spotlight one shake and give its creator a t-shirt.