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Choose Jetboil Stash when lower system weight and a separate pot-and-burner arrangement suit your backpacking kit. Choose the updated Flash when integrated ignition and a locking cooking cup are more useful to you. Both focus on boiling water, so compare the practical steps you repeat at every meal.
Table of Contents
Compare the exact systems
This guide uses the Stash 0.8L and updated Flash 1.0L. Older Flash figures should not be mixed into the comparison.
| Feature | Stash | Updated Flash |
|---|---|---|
| Nominal pot volume | 0.8 litre | 1 litre |
| Published system weight | About 200g | 371g |
| Ignition | Separate match or lighter | Integrated rotary igniter |
| Pot arrangement | Separate pot on supports | Locking cup-to-burner connection |
| Fuel regulator | No | No |
The quoted system weights exclude the fuel stabiliser. Include that, fuel and any extra accessories when comparing what goes into your pack.
What the Stash changes
Stash separates the burner from the pot instead of using the Flash-style locking cup. You lift the pot from its supports for pouring. Check the handle position and practise using it with the quantities you normally prepare.
Jetboil’s Stash FAQ says the 0.8-litre pot safely boils 500ml. That distinction matters when planning water for a meal and a drink. Nominal pot capacity is not the permitted boiling fill.
What the Flash adds
The updated Flash combines a taller insulated cup with turn-and-click ignition and a revised locking connection. This may suit a repeatable boil-and-pour routine, particularly if you prefer the cup and burner to connect as a system.
A locking cup does not remove the need for a stable base and careful handling. Follow the manual before lifting or disconnecting components, and keep the stove clear of passing feet and loose clothing.
Check your meal and accessory plans
Neither model has a fuel regulator for the finer cooking control associated with MiniMo. If you mainly want to simmer meals, assess that requirement directly rather than choosing solely by grams.
Stash can support certain other cookware within Jetboil’s stated limits. Flash accessories must match the system generation. Check compatibility before adding a pan or support, because those purchases can change both cost and packed weight.
Which belongs in your rucksack?
Compare the Jetboil Stash on Amazon UK and updated Flash 1.0L. Choose Stash if its lighter separate components fit your routine; choose Flash if the integrated features are worth carrying.
For either, use approved fuel, cook outdoors away from shelters and bring a suitable backup ignition method. A successful trial meal before departure is more useful than comparing isolated marketing boil times.
Continue with our camping stove guide.
Reviewed 10 September 2026. This guide is based on published specifications and guidance.