Popcorn balls were a fixture at Halloween parties during the 1950s ... from crushed Oreos to chocolate chips to marshmallows. Related: Step-by-Step Instructions for Make Caramel Apples at Home ...

Stonkingly moreish, these popcorn balls are squidged together with marshmallow and blessed with a liberal sprinkling of crunchy, ground espresso coffee. Heat the oil gently in a heavy-based pan ...