Crunchie is one of the few chocolate bars where the filling, not the chocolate, is the whole point. That golden honeycomb centre has a very specific, satisfying snap-then-crumble texture that people search for by name — and it comes down to a genuinely interesting bit of kitchen chemistry.
A bar built on a chemical reaction
Crunchie's honeycomb centre is made by heating sugar and golden syrup, then adding bicarbonate of soda. The heat causes the bicarbonate to release carbon dioxide gas, which gets trapped in the molten sugar as it sets — creating the light, bubbled, brittle structure inside the chocolate shell. It's the same basic principle behind honeycomb toffee generally, but Crunchie is the version most UK shoppers grew up with.
Cadbury has made Crunchie in the UK since 1929 (under various names before settling on "Crunchie" in 1935), making it one of the older bars still on shelves in something close to its original form.
Why it doesn't stay crunchy forever
Honeycomb centres are sugar glass — technically an amorphous, unstable structure that slowly absorbs moisture from the air. That's why a Crunchie left out of its wrapper, or stored somewhere humid, softens over time. It's also why the bar is worth eating relatively fresh rather than stockpiling for months, if crunch is what you're after.
What we actually stock right now
We currently carry Cadbury Crunchie Chocolate Bars 4 Pack 104.4g — Case of 10, which is in stock, though numbers are limited — we show 9 units left as a wholesale case. We also stock Cadbury Crunchie Chocolate Bar 40g — Case of 48, which has healthy stock (195+ units) and is also available as 2-pack and 3-pack case bundles at a small discount. Both are genuinely in stock and ready to ship — no special order wait on either.
FAQ
Why does Crunchie's centre have bubbles in it?
The honeycomb filling is made by heating sugar and golden syrup, then stirring in bicarbonate of soda. The reaction releases carbon dioxide gas, which gets trapped as the mixture cools and sets, creating the light, bubbled texture inside.
How long has Crunchie been around?
Cadbury has produced Crunchie since 1929, with the name "Crunchie" settled on by 1935 — making it one of the longest-running bars still sold in the UK.
Why does a Crunchie go soft if you leave it out?
The honeycomb centre is a form of sugar glass, which slowly absorbs moisture from the air. Once it does, the brittle snap softens, so it's best eaten reasonably fresh and kept wrapped.
Is Crunchie in stock at Supreme Sweets right now?
Yes — both the 4-pack multipack case of 10 and the single-bar case of 48 are currently in stock and ship without a special-order wait, though the 4-pack case is running low.