Every summer, the same headline appears somewhere in the British press: a heatwave has hit, and with it, a wave of jokes about chocolate turning to soup in people's bags, cars, and letterboxes. It's funny until it's your gift, your treat, or your order that arrives as a puddle instead of a present.
So let's actually solve it. Here's why chocolate melts in the heat, what you can do about it at home, and — because we make chocolate for a living — which of our own treats are built to survive a hot day far better than the rest.
Why chocolate melts so easily
Chocolate's Achilles heel is cocoa butter. It's what gives chocolate that famous "melts in the mouth, not in the hand" texture — but that phrase only holds up to a point. Cocoa butter starts softening at around 28–30°C and is fully liquid by roughly 34–35°C, which is just above body temperature. That's precisely the point: chocolate is engineered to melt at temperatures your body — and a UK heatwave — can easily reach.
Milk chocolate melts fastest, because milk fat lowers the overall melting point further. Dark chocolate holds its shape a little longer, since it has more cocoa solids and less fat overall. But in a genuine heatwave, with parcels sitting in vans, on doorsteps, or in cars, almost anything will soften eventually.
How to keep your chocolate in one piece
A few simple habits make a real difference:
- Store it below 20°C, ideally in the fridge in hot weather — in a sealed container or its original box, so it doesn't pick up fridge odours or condensation.
- Let it come back to room temperature before eating — chocolate straight from the fridge can taste dull and can "bloom" (that pale, streaky film) if the temperature swing is too sudden.
- Never leave it in a car, even briefly. A parked car in the sun climbs well past chocolate's melting point within minutes, heatwave or not.
- If you're gifting or posting chocolate in summer, look for insulated packaging, and try to time deliveries so parcels aren't left sitting on a doorstep in direct sun for hours.
- Choose formats that travel well — this is the one most people don't think about, and it's the difference between a treat that survives the trip and one that doesn't.
The smarter move: choose chocolate that's built for the heat
This is where format matters as much as temperature control. A delicate filled biscuit or a smooth bar has almost nothing protecting it once cocoa butter starts to soften — and it shows immediately.
Our dragées — nuts like hazelnuts, pecans and pistachios, coated in chocolate and finished with a flavoured sugar dusting — are a different proposition entirely. The nut at the centre gives the whole piece structure, so even on a genuinely hot day, they hold their shape and bite far better than a filled or moulded chocolate would. The dusted coating also means less of the glossy, fingerprint-melt you get from a bare chocolate shell. They live happily in a jar on a counter, in a bag in your tote, or on a hotel or café counter through a heatwave — which is exactly why we lead with them through the summer months.
We've also adjusted how we ship during hot spells: parcels go out earlier in the week so nothing sits over a hot weekend, and we're happy to add extra insulation on request if you're ordering during a heatwave. If you've held off ordering chocolate because of the weather, that's exactly the problem we've built around.
Try it for yourself
Browse our full Dragées collection — including the DDL Caramel & Peanuts dragees, Salted mixed nuts with dulce de leche chocolate, and this summer's limited-edition Strawberry & Cream Crispy Dragées — and order with confidence, heatwave or not.