Vanilla Chocolate Shake

What is it?

Vanilla and chocolate custard get blended together in this Shake Shack shake, which uses the chain's dense custard base, so it lands thicker than a standard milkshake. Both flavors run through the cup rather than staying layered or separated, which means each sip carries a steady mix of cocoa and vanilla. The vanilla brings eggy sweetness and a plain dairy note, while the chocolate adds a darker cocoa edge. It sits in the same family as the Black & White Shake on Shake Shack's menu, and in some locations it's essentially the same item under a different name.