The baking soda and acid react to form carbon dioxide which is trapped in the highly viscous mixture.

It is also made commercially and sold in small blocks, or covered in chocolate, a popular example being the Crunchie bar of Britain and Canada, or the Violet Crumble of Australia.

[citation needed] In Japan, raw egg whites are mixed with the baking soda to make the final product have a puffed up, dome shape.

Dalgona (달고나) is a Korean candy made with melted sugar and baking soda.

A very popular ice-cream flavour consisting of plain vanilla ice cream with small, solid lumps of honeycomb toffee is also known as hokey pokey.