How to Fix Honeycomb That Crystallized
You cannot un-crystallise a batch of grainy honeycomb once it sets, but you can prevent it next time by dissolving the sugar fully before it boils, adding golden syrup or glucose as an anti-crystallising agent, not stirring once it boils, and washing stray crystals down from the pan sides.
By Kelsy Maruyama, Founder & Toffee Maker, Kelsy's Kandy
Reviewed by Jason Burns, Editorial Steward
Last updated Jul 20, 2026
Published by Kelsy's Kandy · Licensed under Citation License 1.0
What it means
- Crystallisation happens when sugar seizes into grains, usually from undissolved sugar, stray crystals, or stirring during the boil.
- Golden syrup, glucose, or a little honey interferes with crystal formation and keeps the candy smooth.
- Once a batch has set gritty it can only be remelted (which risks scorching) or crushed and used as a topping.
Action steps
- Stir over low heat until every sugar grain is fully dissolved before letting it boil.
- Include golden syrup, glucose, or a spoon of honey with the sugar as an anti-crystallising agent.
- Once it boils, stop stirring and brush the pan sides down with a wet pastry brush.
- Use a clean pan and utensils free of stray sugar crystals.
Risks & deadlines
- Remelting a failed batch risks burning the sugar — watch it closely.
- Molten sugar is extremely hot; protect hands when working near it.
Source:
Last verified: 2026-07-20