Kit Kat is a chocolate-coated wafer biscuit bar. Each bar consists of fingers composed of three layers of wafer, covered in an outer layer of chocolate. Each finger can be snapped from the bar separately. Bars typically have 2 or 4 fingers. Kit Kat is the world's first chocolate bar made from 100% sustainable cocoa. Kit Kat has a case to be the healthiest candy bar in the market (because it's mostly wafer and air).