Put the freshly made popcorn into the tray. Put all the caramel coating ingredients, except the bicarbonate of soda and nuts, in a saucepan over a medium heat, stirring until the sugar has melted.

The success of the culinary invention led to the registration of the snack in 1896 and the subsequent popularization of caramel-topped nuts and popcorn. Though caramel corn lacks the inclusion of ...