Butterkist has been coating popcorn in toffee in Britain since 1937 — decades before multiplex cinemas existed to sell it in.
How toffee popcorn became a British staple
Popcorn arrived in UK cinemas in earnest through the 1950s and 60s, following American habits but taking its own direction once it got here. Rather than the buttered or caramel styles that dominate in the US, Britain leaned towards a harder, sweeter toffee coating — closer to a boiled-sugar sweet than to buttered popcorn. Butterkist, launched in 1937, is the oldest and best-known UK popcorn brand built around it, and toffee popcorn became a fixture of fairgrounds and seaside stalls alongside cinemas.
How the toffee coating is actually made
- The syrup — sugar, butter and golden syrup are boiled together to the hard-crack stage, around 150°C, well past the softer stages used for fudge or caramel.
- The coating — popped corn is tossed through the syrup while it's still liquid, so every kernel gets an even, thin coating rather than clumping into a solid mass.
- The set — as it cools, the sugar hardens into a thin, brittle shell around each piece, giving toffee popcorn its distinctive crunch-then-shatter bite.
Toffee vs caramel popcorn
The two get confused because both start with a sugar syrup, but the process diverges from there. Toffee popcorn's syrup is cooked hotter and contains no cream, so it sets hard and glassy. Caramel popcorn syrup is typically cooked to a lower temperature and often includes cream or condensed milk, giving a softer, chewier coating rather than a brittle one.
Frequently asked questions
Is toffee popcorn a British thing?
The sugar-coated "toffee popcorn" style is far more associated with UK cinemas and fairgrounds than the buttered or caramel popcorn more common in the US — it developed as Britain's own take on popcorn once it became a cinema snack from the mid-20th century.
How is toffee popcorn actually made?
Popped corn is coated in hot toffee syrup made from sugar, butter and golden syrup boiled to the hard-crack stage (around 150°C), then tossed while the coating is still liquid so it sets around each kernel as a thin, crunchy shell as it cools.
What's the difference between toffee popcorn and caramel popcorn?
Toffee popcorn uses a syrup boiled to a higher temperature that sets hard and crunchy, giving a brittle, glass-like coating; caramel popcorn syrup is typically cooked to a slightly lower stage and often includes cream, giving a softer, chewier finish.