Today is Mojito day on the Shake Shack frozen custard calendar. I don't care for mojitos, but this non-boozy custard flavor was a pleasant surprise. The lime and mint flavors are light and refreshing against the creamy vanilla custard backdrop. There aren't any overpowering flavor notes here, just a summertime mojito kiss. As production manager Dan Tavan told me, "Everything but the club soda." Besides the fresh mint leaves and lime puree, there's also some rum flavoring (extract). I loved that the rum component added something extra without any booziness which I dislike in desserts.