SHO Food Flask - Ultimate Vacuum Insulated, Double Walled Stainless Steel Food Flask & Food Container - 8 to 12 Hours Hot & 18 to 24 Hours Cold - 800ml - BPA Free (800ml, Original Stainless Steel)

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Plus, the tapered top of the flask means it’s much easier to drink out of - but of course, you can use the foldable spoon as well. How does a vacuum flask work? Best quality & features – The Thermos Stainless King Food Flask proves why Thermos are the standard when it comes to flasks. The durability and build are second to none, something which is exemplified by Thermos’ 50-year guarantee. Although not the largest flask here, the excellent heat retention times of up to 9 hours (hot) and up to 12 hours (cold) are among the best out there for a good-sized single portion of food. The colour options are a nice bonus, too. The amount of food you can get into your flask should be one of the main considerations you make when looking for the right food flask. Nobody knows your appetite and eating habits better than you do, so take a close look at the volumes of the flasks you’re considering and weigh that up against how much you’d be looking to carry. After all, it defeats the point somewhat if you can only fit half a lunch portion in what you’ve bought, or on the other end of the spectrum, buy one that’s too big and realise you’ve wasted money on flask volume you just won’t fill. Also bear in mind how many people you’re feeding – one large flask might feed two, if you’re going on a trip somewhere and are trying to economise on how much to take with you. Lid

SHO Original 2.0 Water Bottle SHO Original 2.0 Water Bottle

For drinks flasks, you’ll need an elongated brush that can reach the bottom, whereas for food flasks, which are shorter and have wider openings, it’s generally possible to wash it as you would a mug. For kids, there are smaller capacity ones of around 300ml. These don’t weigh as much, will fit into lunch boxes and, as kids generally eat less, there’s nothing going to waste. Sandwiched between the inner and outer layers is a void - this vacuum stops the heat from the inner layer reaching the outer layer as heat can only be conducted through particles, whether it’s in the air, through liquids or solids.

Easiest to unscrew: Zwilling vacuum food flask

To remove this, simply add a couple of tablespoons of white vinegar to the flask and top it up with water. Leave this for a couple of hours or overnight to give it time to work. The ones that will keep your food warm for longer will generally cost more, but they can also be more versatile. Of the food flasks we tested, we think the Thermos Stainless King food flask would be best for soups. The cylindrical jar has a wide base with a lid that’s coated in a grippy material that makes it much easier to unscrew.

food flasks for hot meals at work or camping trips 6 best food flasks for hot meals at work or camping trips

In testing, we found that the contents of the jar had cooled significantly by the end of the 6 hours. It was still warm to the touch, but you would probably want to reheat it depending on what you’re storing. Thermos is the most well-known brand for making insulated flasks so they’ve got it down to a fine art.

Best value:Thermos Stainless King food flask

There are a couple of different ways a vacuum flask can keep the contents warm and it starts with the double-layered base.

SHO Food Flask - Vacuum Insulated, Double Walled Stainless SHO Food Flask - Vacuum Insulated, Double Walled Stainless

When we tested this flask, it kept the contents piping hot until we were ready to enjoy it and the slimline frame meant it was easy to store in our lunch bags or take on the go. The Hydro Flask insulated food jar was one of the simplest designs we tried and the 28oz (828ml) version offered some serious capacity. You can also get a smaller 20oz (591ml) version, though. Our Lifetime Guarantee is ultimately our promise that if you have a problem with a product we will find a solution for you. The one thing that this jar does have going for it is its extra wide opening, which makes adding food in and washing up afterwards that much easier.Obviously heat loss is still possible from the point where the two layers join up, and the seals, which is why even the best vacuum flasks will lose heat eventually. How much are food flasks? Whatever it is you need from a flask, our buying guide is here to help you make a bit more sense of what you need in terms of the most essential criteria – after reading this, you should be absolutely sure which food flask is right for you. Capacity We don’t think it’s a huge problem but obviously it depends on how long you’d need to keep your food warm. For a camping trip where you might not eat for hours, it’s not ideal but for the office, the keep-warm time should be sufficient.

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However, the silky smooth stainless steel finish made tightening and loosening the lid much harder. On the plus side, this made cleaning it super easy - handy as it can’t go in the dishwasher. Finally, think about how easy it is to clean. Some flasks are dishwasher safe but it’s almost always better to wash it by hand. For this reason, a flask with a wider opening is generally better. We also had to wrap the spoon to make sure it stayed clean before use as it’s on the outside of the flask rather than the inside.The lid can be a major functional part of any kind of flask. Just like drinks flask which utilise the lid as a miniature cup/mug, so do food flasks have convertible lids. It might be a pertinent consideration, especially if you’re getting a food flask for camping or hiking trips, to have a flask with a lid that doubles up as a bowl. Some also come with foldable spoons, meaning cutlery becomes one less thing that you have to bring. Materials