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JetBoil Flash Java Kit: Hot Water Under a 100 Seconds!

Could you imagine waking up and enjoying a fresh cup of coffee or tea in 100 seconds? Well, now you can with the JetBoil Flash Java Kit. JetBoil claims that their stove can boil water in under 100 seconds, and we decided it was time to test their claim. By the end of this JetBoil Flash Java Kit review, you’ll know whether or not the JetBoil Java Kit is a must-have camping gear item for your next outdoor excursion.

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Jetboil Flash Java Kit Cooking System, Ecto Green
4.8
$138.95 $108.50

VERDICT: If you're looking for a personal cooking system that is fast and efficient, the JetBoil Flash Java Kit is a great option. With a lightning-fast 100-second boiling time, this kit can make boiling water and keep it warm a breeze. Plus, the ultra-stowable Coffee Press and FluxRing cooking cup make French press coffee and cooking meals on the go easy and convenient. Read on for our full JetBoil Flash Java Kit review.

Weight: 13.1 oz / 371 g
Volume: 1 L
Power: 9,000 BTU/h, 2.6 kW
Time to Boil: 100 sec/.5 L
Ignition: Push Button
Fuel Type: JetPower
Pros:
  • Lightweight
  • Convenient
  • Compact Design
  • Boils Water Quickly
  • Portable
  • Easy-To-Use
  • Durable
  • Coffee Press Included
Cons:
  • Cannot Use Alternative Pots Without an Added Accessory
  • Performance Affected by Cold Weather
  • Cannot Simmer
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07/19/2025 03:04 pm GMT

What Does the JetBoil Flash Java Kit Include?

The complete JetBoil Flash Java Kit includes JetBoil accessories like the coffee press, stablizer stand, bowl, fluxring cup, lid and stove
The fast boiling JetBoil Flash Java Kit Includes: FluxRing Cup, Coffee-Style Lid, Bowl, Stove, Stabilizer

Before getting into the nitty gritty of the JetBoil Flash Java Kit review, let’s see what comes in the box. In this Java Kit, you will find the following:

Stove
FluxRing cooking cup
Stabilizer stand
Silicone French coffee press
Cup (bowl)
Lid

What’s not included is the fuel, which is purchased separately. 

JetBoil Flash Stove Design and Features

Weighing only 13.1 oz, the portable coffee brewing stove is perfect for backcountry camping, backpacking trips, hunting, camping trips, biking, or traveling in the wilderness.

The JetBoil Flash Java Kit camping and backpacking stove cooking system comes with an awesome-looking 1-litre FluxRing cooking cup, which the coffee press for JetBoil nests perfectly inside, as does the stabilizer stand for your fuel. The protective cup doubles as a measuring cup or bowl, and the lid turns your cooking cup into a drinking thermos for your camping coffee. This neat little system helps eliminate the need to carry extra gear and lessens the unnecessary pack weight.

Fuel

When it comes to fuel – the JetBoil cooking system uses an isobutane and propane mix. Starting the stove is done using a convenient push-button igniter that starts the system instantly. The stove itself locks into the JetBoil FluxRing cup, keeping the system secured and stable. The 1-litre cooking cup features a colour-changing heat indicator and is scratch-resistant. As a bonus, the smaller 100g JetBoil fuel canister fits nicely inside the cup.

JetBoil outdoor cooking is made easy with the JetBoil Flash Stove Valve adjuster
Valve Adjuster on the JetBoil Flash Stove
JetBoil backpacking camping stove features a Pushbutton Igniter
Pushbutton Igniter on the Flash Stove

Flash JetBoil Uses

With fast boiling, the JetBoil is perfect for the quick morning coffee, tea, or hot chocolate. Have a hunger headache? Don’t worry, the JetBoil will have you eating dehydrated meals, camping meals, and soups in no time. Sold separately is the JetBoil Pot Support, which can be mounted to gas canisters for outdoor cooking. The camping coffee maker stove is also compatible with accessories like the skillet or pot.

Here are a few JetBoil accessories that work well with the JetBoil Flash Java Kit 2.0.

Further Reading: Love camping stoves? Check out our BioLite CampStove 2 Review to find out if it’s any good.

JetBoil Flash Java Kit Ultra-Fast Boil System

JetBoil FluxRing Cup Fill Line is marked inside the cup
The JetBoil Flash easy to use stove is marked with a max safe fill line on the FluxRing Cup

Doubting the fast cooking claim, we decided to time the 100 second claim of the Java JetBoil Flash – it did not disappoint! During a few of our off-roading adventures, we timed the boil to 88 seconds. We noticed that timing was dependant on the weather and surrounding environment. The JetBoil Flash is a personal cooking system meant to boil water for one to two people. Considering the fast boil, you could easy boil water for two more and have everyone enjoying a meal together. Still faster than boiling a large pot of water!

JetBoil recommends no more than 2 cups (16 ounces) of water for an ultra-fast boil. And, of course, we decided to add more water to see what happens. Adding more than 2 cups of water results in the cooking system boiling the water at a reduced rate.

It also increases the risk of splatter or spillover, which is not fun when admiring this impressive boil time. Because of the intense boil, the stove vibrated but did not tip – thankfully, we made sure the stabilizer stand was on.

Convenient FluxRing Cooking Cup of the Java Kit Cooking System

Drinking a Jetboil hiking coffee straight from the JetBoil Flash FluxRing Cooking Cup
Drinking a fresh coffee from the JetBoil FluxRing Cooking Cup

What makes the JetBoil Flash boil water at such an impressive speed? Look to the tech found in JetBoil’s 1-liter FluxRing cooking cup. The cup’s innovative design ensures even heat distribution for faster boiling and ultimate fuel efficiency, which makes this a cost-effective kit. With decreased consumption, JetBoil minimizes its carbon footprint and makes it a sustainable, eco-friendly solution for those who want to reduce their environmental impact.

The FluxRing Cooking Cup is also the heart of the Flash Java Kit. The material used is scratch-resistant, which helps make for easier transportation – no need to worry about damages. While the cup’s innovative design allows for fast boils, it also doubles as a thermos – thanks to its coffee-style lid, and neoprene cover with an easy-to-carry handle. I love being able to enjoy a hot beverage on the go, without transferring it over to a thermos! It keeps the pack load light and there’s less dishes to wash.

When in backcountry, your water supply will most likely come from a river or lake – you must boil the water vigorously or risk getting sick. Rule of thumb is to boil the water for three extra minutes, depending on elevation.

The cooking cup features a thermochromatic color-change heat indicator, which aids in verifying water readiness. Cleaning is easy thanks to its non-stick surface, as nobody wants to carry their kitchen sink.  

The Thermochromatic Colour-Change Heat Indicator on JetBoil's cup is red
Seen on the FluxRing Cup is the Thermochromatic Colour-Change Heat Indicator

PRO TIP

If spillage occurs during cooking, the cooking cup absorbs the hot water, which heats the neoprene cover. Be careful when removing the JetBoil FluxRing from the stove. Fortunately, the system cools down quickly.

How To Use the JetBoil Flash Java Kit Cooking System

Below is a short video of the JetBoil Flash Kit in use.

Efficient Coffee Press

BushLife - JetBoil Flash Java Kit
JetBoil Flash Coffee Set Up on a Trekking Adventure

Fresh coffee vs instant? I’m not a fan of instant coffee, and you probably aren’t either. You’ll love the fact that the JetBoil Flash Java Kit includes a durable silicon French coffee press. This press filters out any grinds or tea leaves, leaving you with a smooth and flavorful cup of your favourite beverage. Now, that’s something we can all wake up to!

The silicon press fits tightly into the cup. However, we did find that occasionally some coffee grinds made their way through. Based on our findings, the Jetboil Flash Coffee Press needs to be perfectly squared when pushing the press down.

Pouring Coffee Grinds into Boiling Water in the JetBoil Cup
Pouring Coffee Grinds into Boiling Water
Coffee Press for JetBoil Fits Snuggly into FluxRing Cup
Coffee Press for JetBoil Fits Snuggly into FluxRing Cup

How To Assemble the JetBoil French Press 

Assembly of the French coffee press is quick and easy – it only takes three steps!

Screw the bottom stem into the top of the silicon coffee press
Take your top rod and insert it into the lid’s hole
Connect the two pieces
You now have an assembled JetBoil French press

How To Use the JetBoil Java Press

Boil your water and wait for the rolling boil to die down
Add your coffee grounds or tea leaves
Wait for the appropriate brewing time
Press down on the plunger and enjoy!

How To Make a Coffee with the JetBoil Java Press Video

Portability of the Jet Boil Java Kit

a hiker is holding up the stow-able, lightweight and portable JetBoil Flash Java Kit camping and backpacking stove cooking system
Holding up the stow-able, lightweight and portable JetBoil Flash Java Kit camping and backpacking stove cooking system

As mentioned earlier, portability of the JetBoil Flash Coffee Kit is hard to beat. At just 13.1 ounces, it’s incredibly lightweight and easy to carry. And thanks to its compact design, it takes up very little space in your backpack, which makes it a great stove for backpacking and mountaineering, where lighter loads are crucial.

Disassembly is very quick and easy. The JetBoil stabilizer stand folds into a neat little triangle that can nest into the cooking cup. There is room in the cup to store the disassembled coffee press and stove. Place the measuring cup onto the bottom of the cooking cup and pop the lid onto the top, and you now have a portable, compact system. How convenient is that!

JetBoil Flash Java Kit FAQs

Can You Use an Alternative Pot on a JetBoil Flash?

You can use any pot or pan on the Jet Boil Flash, provided you use the JetBoil Stainless Steel Pot Support, which is purchased separately.

Can the JetBoil Flash Java Kit Be Used to Cook Food?

Yes, use the boiling water for MREs (dehydrated meals). As to cooking, because of the vigorous way it boils water, you need to be extra vigilant when warming up a soup or cooking rice or pasta. The difficulty is in bringing the JetBoil down to a simmer.

Can you adjust the heat on a JetBoil Flash Stove?

The Flash stove does have a flame adjuster, but unfortunately, you cannot set it low enough to provide a simmer.

How much water can the JetBoil Flash Java Kit cooking system boil?

Expect to boil 10 litres of water on a 100 g canister of JetPower fuel.

Can you boil with the lid on Flash Java Kit cooking system?

Some will use the lid to prevent spillage or splatter when boiling. Know that when plastic is heated, it leeches chemicals into your food and also produces off-gases. For these reasons alone, I would avoid using the plastic lid during the heating process.

Is the JetBoil Flash Java Kit good for motorcycle camping?

Yes, as a motorcycle camping stove, the entire system nests, and is compact to fit neatly into a saddlebag or rolling bag.

What’s included in the JetBoil coffee kit?

Inside the kit you’ll find a stove, FluxRing cooking cup, Stabilizer stand, Silicone French coffee press, cup (bowl), and lid.

Further Reading: Discover what is a Meal Ready to Eat, and why it’s a simple way to pack food.

Fire Bans

Enlightened by the recent forest fires, the entire province of Ontario was under a fire ban. Several municipalities (including ours) are still imposing local fire bans, which poses a serious problem for those camping or in the backcountry who need to boil water for safe consumption or to cook a meal. 

Gas stoves are an exception during these fire bans and are permitted for use, which makes a stove like the Java Flash a must if you intend to cook during one of these bans.

You will often find fire exceptions for cooking purposes – meaning certain areas (or times of day) are allotted for cooking purposes only, which generally applies to cities and is common knowledge. However, with a fire ban, this exception does NOT apply! Stoves such as the BioLite CampStove, which uses wood or pellets, are NOT permitted during a fire ban. Therefore, the JetBoil Flash Java kit cooking system becomes more attractive.

Is It Worth Getting a JetBoil Flash Java Kit Cooking System?

Investing in the JetBoil Flash Java Kit is wise if you love the outdoors and appreciate a quick meal or even a fresh cup of your favourite hot beverage. It’s lightweight, takes up very little room in your pack, and is super easy to use. I can say that we are incredibly happy with ours – it’s been our go-to stove for off-roading and backcountry hikes. So, if you’re looking for convenience and comfort of having a reliable stove by your side, check out the JetBoil Flash Java Kit today.

QUESTION: Have a JetBoil? How fast can you get yours to boil?

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Katherine Widziak
Katherine Widziak

Fuelled by the boundless energy of my two adventurous children, my diverse repertoire extends beyond the realms of an ordinary mother. As a seasoned graphic designer, master of social media content, and savvy marketing strategist, I've sculpted my own entrepreneurial journey. My passion for the great outdoors defines me - from igniting fires to setting up camps, my skills are diverse and practical. Skilled in ATV riding, possessing sharpshooting accuracy, and a knack for out-fishing just about any man - even my husband, though that's our little secret.

When not working away at something creative, you'll find me enjoying the outdoors in one form or another. Hopefully, I can inspire many women and men alike to pursue their outdoor goals and embark on new adventures.

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