Flash Java Kit brews fast, trail-ready coffee with an ultrafast Jetboil boil time
What Our Gearhead® Experts Are Saying:
"This kit is a game-changer for coffee on the trail. The Flash boils water in just two minutes, and the included silicone coffee press makes a smooth, grit-free cup. Everything packs neatly inside the cooking cup, saving space in my pack, and the turn-and-click igniter makes it super easy to get started. Whether I'm fueling up in the morning or needing a mid-hike boost, this setup delivers the perfect brew fast."
Nothing fuels our adventures like a fresh, hot cup of coffee, and the Jetboil Flash Java Kit makes it easier than ever to brew up the perfect cup on the trail. Combining the ultrafast Flash cooking system with a stowable silicone coffee press, this kit lets us boil water in just two minutes and press rich, full-bodied coffee right in the cooking cup.
Designed for efficiency, the 1.0L FluxRing cooking cup features an insulating cozy to keep water warm, while the new turn-and-click ignition ensures fast, hassle-free brewing. The entire setup packs neatly inside the cooking cup, saving space and keeping our kit organized. Whether we’re watching the sunrise at camp or refueling mid-adventure, the Flash Java Kit delivers caffeine on demand, wherever we roam.
Details
- Complete coffee-making system with Jetboil’s ultrafast Flash stove
- Boils 0.5L of water in just 120 seconds for quick brewing
- Stowable silicone coffee press fits neatly inside the cooking cup
- Turn-and-click ignition offers effortless startup
- Insulating cozy retains heat for a hot cup, even in cold conditions
- Compact, all-in-one design saves space in our pack
- Item #JETP03L
- Material
- [burner] stainless steel, [handles] metal, [cup] anodized aluminum, [cup cozy] neoprene
- Fuel Type
- propane/isobutane
- Boil Time
- 100sec per 16oz
- Burn Time
- 10L per 100g can
- Heat Output
- 9000BTU/h (2.6kW)
- Piezo Ignition
- yes
- Includes
- Jetboil Flash, Silicone Coffee Press, Green Mountain Coffee
- Fuel Bottle/Canister Included
- no
- Dimensions
- 4.1 x 7.1in
- Claimed Weight
- 13.1oz
- Activity
- camping
- Manufacturer Warranty
- 1 year
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 21 ratings
Review Summary
Customer Images
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Selecting an option will reload the available reviews on the pageOctober 1, 2025
Fast boil as advertised. Took a few attempts with the press to get coffee right. Solid product.

Originally reviewed on ExpertVoice.com
October 1, 2025
Mobile coffee shop
[This review was collected as part of a promotion.] I recently bought the flash Java fast boil system in an effort to lighten my hunting pack and equipment needed. The ultra light design and compact unit helps me to add more impactful equipment needed for those long hunts especially like the rugged design the quick heating system so I’m able to recharge pack and get on with the hunt. I would highly recommend this and other jet systems for the avid outdoorsman.
Originally reviewed on Johnson Outdoors
September 30, 2025
Good coffee anywhere
I got tired of instant coffee. My morning cup in the backcountry is one of my favorite things. This made it quick and easy without a bunch of bulk or weight.

Originally reviewed on ExpertVoice.com
September 22, 2025
The Jetboil system works as described and is very convenient. It's a great option if you are just making dehydrated meals and coffee. On the flip side, there is the cost. I'm not sure that it provides that much more value than lower priced options. I've used it on one trip, and my opinion may change over time but for now I think cost is a negative factor.

Originally reviewed on ExpertVoice.com
September 20, 2025
The Perfect Coffee Companion for the Outdoors
[This review was collected as part of a promotion.] I took the Jetboil Java 1.0 on my last camping trip, and it completely changed my morning routine outdoors. The setup was quick and easy. Within just a few minutes I had boiling water, and the French press attachment worked flawlessly. I was a little skeptical at first about how good the coffee would turn out in a camp setting, but it honestly tasted rich and smooth, just as good as what I would make at home. What I loved most was how efficient the system is. It boils water fast, packs down compactly, and the press feels sturdy. No mess, no fuss, just a hot cup of coffee while watching the sunrise in the mountains. For anyone who enjoys good coffee while hiking, backpacking, or camping, this is an absolute game changer. Would definitely recommend it to anyone who does not want to compromise on their coffee ritual while outdoors.
Originally reviewed on Johnson Outdoors
September 19, 2025
Does exactly what it should. Great for easy backpacking meals, bikepacking, really anything.

Originally reviewed on ExpertVoice.com
September 13, 2025
Fast coffee
Awesome product. Bought this for a camping trip and was able to make french press in 5 minutes or so start to finish with no grounds in the coffee. The spout works just fine as long as you pour quickly/aggressively. You can absolutely fill above the max water line - just turn off heat at first boil
Originally reviewed on Johnson Outdoors
August 5, 2025
First Time Owner
[This review was collected as part of a promotion.] Reliable, compact and fast! First time user and we made tailgate coffee every morning on our recent 2 week Montana / Alberta hiking trip. Although I didn’t pack it on trail, it’s small and light so I would not hesitate to do so. Great product and did not disappoint!
Originally reviewed on Johnson Outdoors
August 4, 2025
Absolutely reliable. Use it for backcountry everything and does everything I need it to. High quality!

Originally reviewed on ExpertVoice.com
July 28, 2025
Brewing on The Rubicon
[This review was collected as part of a promotion.] I was finally able to take my Jeep out to California to drive the Rubicon Trail. I did a decent amount of research and knew I would be spending 2-3 nights on the trail. Knowing that I knew I would be making coffee on the trail and I also knew that there was a fire ban so I would need to bring my own way of cooking. This was the chose I made. 100% satisfied.
Originally reviewed on Johnson Outdoors
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