The Nanaimo bar is a dessert of Canadian origin popular across North America. A type of chocolate no-bake square, it receives its name from the city of Nanaimo, British Columbia. It consists of a crumb-based layer, topped by a layer of light custard or vanilla butter icing, which is covered in soft chocolate. Many varieties are possible by using different types of crumb, flavours of custard or icing (e.g. mint, peanut butter), and types of chocolate. Two popular variations on the traditional Nanaimo bar involve mint flavoured custard or mocha flavoured custard.