BushLife - JetBoil Flash Java Kit Hero

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, 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 review, you’ll know whether or not the JetBoil Flash Java Kit is a must-have for your next outdoor excursion.

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Jetboil Flash Java Kit Cooking System, Ecto Green
4.8
$144.95 $132.96

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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01/16/2025 05:55 am GMT

What Does the JetBoil Flash Java Kit Include?

BushLife - Complete JetBoil Flash Java Kit
JetBoil Flash Java Kit Includes: FluxRing Cup, Coffee-Style Lid, Bowl, Stove, Stabilizer

Before we start with our 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 Java Kit Design and Features

Weighing only 13.1 oz, the JetBoil Flash is perfect for backcountry camping, backpacking, hunting, biking or paddling in the wilderness. Not only is it light, but the entire system nests, taking very little room in your pack.

The Java Kit has an awesome-looking 1-litre FluxRing cooking cup, which the French press kit 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. This neat little system helps eliminate the need to carry extra gear and lessens the unnecessary pack weight.

Features

The cooking system uses an isobutane and propane mix and has a convenient push-button igniter that starts the system instantly. It also features a stove that 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 fuel canister fits nicely inside the cup.

BushLife - JetBoil Flash Stove Valve
Valve Adjuster on the JetBoil Flash Stove
BushLife - JetBoil Flash Stove Pushbutton Igniter
Pushbutton Igniter on the Flash Stove

Uses

The JetBoil Flash Java Kit will absolutely have your water ready in 100 seconds, making it ideal for coffee, tea, hot chocolate, dehydrated meals and soups. Sold separately, the JetBoil Pot Support can be mounted to gas canisters to cook fuller meals with compatible accessories like a skillet or pot.

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

JetBoil Flash Java Kit Ultra-Fast Boil System

BushLife - JetBoil FluxRing Cup Fill Line
Max Safe Fill Line on the FluxRing Cup

The Java JetBoil Flash is a personal cooking system with an ultra-fast boiling time. With a stopwatch in hand, the JetBoil did not disappoint. During some of our wilderness adventures, we have timed boils at 88 seconds, which seems dependent on the weather and surrounding environment. 

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. By adding more than 2 cups of water, the cooking system will boil the water at a reduced rate. With increased water volume, there’s a 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 due to the stabilizer stand provided. If you’re wondering, the JetBoil boils enough water for one to two people.

Convenient FluxRing Cooking Cup

BushLife - JetBoil Flash FluxRing Cooking Cup
Drinking out of the JetBoil FluxRing Cooking Cup

So, what makes the JetBoil Flash boil water at such an impressive speed? It’s the technology 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, making 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 the heart of the Flash Java Kit. It’s made from quality, scratch-resistant material. There is no worry about getting it damaged during transportation. The cup’s innovative design allows for fast boils, but it also doubles as a thermos with its included coffee-style lid. The cup’s neoprene cover also features an easy-to-carry handle.

Occasionally, your water supply will come from a river or lake – you must boil the water vigorously or risk getting sick. 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.  

BushLife - JetBoil Flash Heat Indicator
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

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

Fresh coffee vs instant? I’m not a fan of instant coffee, and you probably aren’t either. The JetBoil Flash Java Kit includes a durable silicon French coffee press. This press filters out any grinds or 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, on occasion, we found that some coffee grinds did slip through, and based on our findings, if the press is not perfectly squared when pushing down, some coffee grinds will get into your coffee.

BushLife - JetBoil Flash Coffee Grinds
Pouring Coffee Grinds into Boiling Water
BushLife - JetBoil French Press Fitting
French Press Fits Snuggly into FluxRing Cup

How To Assemble the French Coffee Press 

Assembly of the 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 French coffee press

How To Use the French Coffee 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 JetBoil

Portability of the JetBoil Flash Java Kit

BushLife - Stowable JetBoil Flash Kit
JetBoil Flash Java Kit is Stow-able, Portable and Lightweight

As to portability, the JetBoil Flash Java 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.

Disassembly is very quick and easy. The 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

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?

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. So, go ahead and get yourself a JetBoil Flash today and experience the convenience and comfort of having a reliable stove by your side.

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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