The Top 8 Soup Thermos for 2022

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The days of buying a thermos solely to keep your coffee hot are long gone. The latest generation of stainless steel extremely wide necked vacuum flasks, often known as soup thermos or food jars, are great for keeping hot meals hot or cold lunches cold for all members of the family.

While a soup thermos may keep meals warm for a while, there can be significant discrepancies between brands and kinds of soup thermos. How the thermos and your meals are prepared may also affect how effectively they remain warm or cold. In this post, we look at some of the greatest soup thermoses and food jars on the market, as well as how to properly prepare them and fully clean them after use.

Best Selection

With its serving bowl and five-year guarantee, the Thermos Stainless King 16 oz food jar with folding spoon (army green) is our top selection for keeping meals hot for seven hours.

Budget Selection

The Thermos FUNtainer 10 oz food jar (blue) is BPA-free and built of robust stainless steel, making it ideal for kids of all ages.

Product Name Grade
Thermos Stainless King 16 Oz Food Jar with Folding Spoon A
Thermos FUNtainer 10 Oz Food Jar A
Zojirushi SW-EAE50PS 16.9 oz Food Jar A-
Stanley Classic 17 Oz Food Jar B+
MIRA Lunch Jar B+
Thermos FUNTainer 16 Oz Food Jar A
Hydro Flask 12 Oz Food Jar B
AKS 16 Oz Food Jar A-

1. Thermos Stainless King 16 Oz Food Jar with Folding Spoon  

Highlighted Features

  • Thermos food jar in stainless steel with a capacity of 16 oz.
  • It may keep you heated for seven hours or chilly for nine.
  • Armed forces green with a serving dish and folding spoon
  • With heated items, the external body will remain cool to the touch, while cold foods will be free of condensation.
  • The manufacturer provides a five-year limited guarantee.

Thermos Stainless King 16 oz food jar with folding spoon (army green) can keep food hot for seven hours and cold for nine. The outer lid is a stainless steel serving bowl, and under the lid is a folding spoon, or you may eat straight from the large Thermos mouth.

Its exterior stays cool to the touch when hot food is present and condensation-free when cold food is present. While this Thermos is dishwasher safe on the top rack, hand cleaning is suggested to ensure that any food or liquid debris caught inside the components is eliminated. While this Thermos comes with a five-year limited guarantee, there is a potential that the external coating on the body may begin to peel off with repeated usage.


  • 16-ounce food jar
  • The color army green
  • With heated food, a cool touch
  • folding spoon and serving bowl
  • 5 year warranty


  • In time, the outside coating may begin to flake.
  • Dishwasher safe, although hand cleaning is preferred.

2. Thermos FUNtainer 10 Oz Food Jar 

Highlighted Features

  • 10 oz. blue food jar with a large opening
  • This is BPA-free and manufactured of stainless steel for long-lasting use.
  • Foods may be kept cold for seven hours or heated for five.
  • There is a five-year limited warranty.

The Thermos FUNtainer 10 oz food jar (blue) is made of sturdy stainless steel and can keep food hot for five hours or cold for seven. This Thermos is BPA-free and boasts an extra-wide opening for easy filling and consuming, however some people think it’s a tad big for younger family members.

A number of owners have also reported that the meal does not stay hot for as long as promised, which may pose issues with school lunches. The maker provides a five-year limited guarantee, and although dishwasher safe, handwashing is suggested.


  • 10 ounce food jar
  • Stainless steel is a long-lasting material.
  • Free of BPA
  • Extremely large mouth
  • Limited guarantee of five years


  • Its capacity may be too great for smaller children.
  • It may not stay heated for as long as you imagine.
  • While dishwasher safe, hand washing is suggested.

3. Zojirushi SW-EAE50PS 16.9 Oz Food Jar

Highlighted Features

  • Stainless steel 8 Pink 16.9 oz food jar with a wide mouth made of 18
  • neutral odor It has a nonstick inner layer that is BPA and flavor free.
  • The dimpled lid is ventilated to enable you to relieve pressure before fully opening it.

The Zojirushi SW-EAE50PS 16.9 oz food jar (pink) is made of 8 stainless steel and features a nonstick BPA-free inner coating that is odor and flavor neutral. The lid has a vent to let the pressure within the jar escape before opening, and the jar’s broad 2.5 neck makes it simple to fill and consume straight from. The lid also has dimples to aid in opening. Made of 18

In certain situations, this food jar may not keep food hot as long as intended, and even after meticulous cleaning, water may seep into the vacuum gap between the two flasks. This jar should also be maintained upright at all times to prevent food from spilling.


  • Pink food jar, 16.9 oz
  • 316L stainless steel
  • Lining is nonstick.
  • Free of BPA
  • Ventilation under pressure


  • The seal may be insufficient to keep water out of the vacuum.
  • To avoid leaks, the jar must be maintained upright.
  • May not keep meals as hot as planned

4. Stanley Classic 17 Oz Food Jar 

Highlighted Features

  • 17 oz. Hammertone green stainless steel food jar with outer cover and serving dish
  • Food may be kept cold or hot for 12 hours.
  • Packable and waterproof
  • The manufacturer provides a lifetime limited warranty.

It is made of 8 stainless steel and is BPA-free. The Stanley Classic 17 oz food jar (hammertone green) has a lifetime guarantee and can keep food hot or cold for 12 hours. The outer cover serves as a serving bowl and is totally packable and leakproof. Made of 18

There are some worries that the pressure in this food jar is too high, and as a consequence, food may pour out when the inner plastic top is opened. There may also be issues with screwing the inner cover back on without accidentally cross-threading it. This food jar, on the other hand, comes with a lifetime limited guarantee.


  • 17-ounce food jar
  • Keeps meals hot or cold for 12 hours
  • Serving dish with the outer lid
  • BPA-free
  • Stainless steel 818
  • Lifetime guarantee


  • The inner plastic lid may be more delicate than the standard metal cover.
  • Pressure build up may make hot food escape while opening

5. MIRA Lunch Jar 

Highlighted Features

  • A 13.5-ounce pink lunch jar with a simple twist cover.
  • MiraGuard Technology is used, as well as a triple-walled vacuum system for insulation.
  • Keeps food cold for 10 hours and heated for five.
  • This is constructed of food-grade stainless steel and is free of phthalates and BPA.
  • The exterior is non-slip and free of moisture.

The MIRA lunch jar contains MiraGuard Technology, which comprises a triple walled vacuum system and a copper covering for improved insulation. It can remain hot for five hours or cold for ten. This leak-proof jar is constructed of food-grade stainless steel and is BPA and phthalate-free.

The outside of the 13.5 oz jar is condensation free and features a matte texture for an anti-slip grip. The flask is hand wash only and has an easy twist cap. Several owners have complained that the meal does not remain as hot as it should, and as with any form of thermos, there is a chance of leaking even when the top is tightly secured. Some younger family members may also have difficulty removing the lid.


  • Pink lunch container
  • 13.5 ounce capacity
  • Insulation using MiraGuard Technology
  • Stainless steel of the highest quality
  • Simple twist lid
  • Leak-proof


  • It might sometimes leak.
  • Meals may not remain as hot as the maker claims.
  • During lunchtime, children may struggle to unscrew the lid.

6. Thermos FUNTainer 16 Oz Food Jar 

Highlighted Features

  • 16 oz stainless steel food container in charcoal color
  • Can keep things hot for five hours or cold for 10.
  • The extra broad mouth makes filling, cleaning, and eating from this simpler.
  • Thermos provides a five-year limited warranty.

Thermos FUNtainer 16 oz food jar (charcoal) keeps food cold for ten hours and heated for five. It’s made of tough stainless steel and features an extra-wide mouth for easy eating, filling, and cleaning. While it is dishwasher safe, hand washing is suggested for cleaning this Thermos. This product comes with a five-year limited warranty.


  • 16-ounce food jar
  • The color charcoal
  • steel stainless
  • Extremely large mouth
  • 5 year warranty


  • Although dishwasher safe, hand cleaning is preferred.

7. Hydro Flask 12 Oz Food Jar

Highlighted Features

  • 12 oz Pacific blue food jar
  • It is made of food-grade stainless steel and can keep meals hot or cold for up to three hours.
  • The powder coated exterior is resistant to humidity.
  • Limited lifetime warranty

The TempShield insulation in this blue Hydro Flask 12 oz food jar (Pacific) keeps food hot or cold for up to three hours. It is made of food grade stainless steel and features a large aperture with a durable powder coat exterior finish that prevents moisture. The manufacturer also provides a lifetime warranty.


  • 12 ounce food jar
  • The color Pacific blue
  • Stainless steel of the highest quality
  • a larger opening
  • Lifetime guarantee


  • It may not be perfect for lunch packs since it only remains hot for up to three hours.
  • Some people may have difficulty undoing the lid, or it may cross-thread.

8. AKS 16 Oz Food Jar 

Highlighted Features

  • This grass green food jar keeps food cold for 12 hours and heated for eight hours.
  • It includes a 16-ounce capacity and leakproof o-rings to prevent leaking.
  • BPA-free and constructed of food-grade stainless steel
  • It has a non-slip base and a scald-proof rim.

The AKS 16 oz food jar (grass green) is constructed of food grade stainless steel and is BPA free. It can stay heated for eight hours and cold for twelve. To avoid leaking, this includes a large opening and leakproof o-rings. The exterior is condensation-free, and it includes a non-slip base and scald-proof rim for pleasant sipping.


  • 16-ounce food jar
  • Free of BPA
  • 316L stainless steel
  • Leakproof
  • Scald-resistant rim


  • Food may not stay as hot as equivalent food jars.
  • Tapering at the top might make it difficult to add certain kinds of food.

Things to Consider Before Buying a Soup Thermos

One of the most essential considerations is how long a thermos or vacuum flask can remain hot or cold, which is commonly measured in hours. It is also worth double-checking the duration, since most manufacturers base it on how long their product can keep liquids hot or cold rather than semi-liquid meals.

When considering thermos capacity, keep in mind that it should always be filled nearly to the top for optimal insulation, so search for one with the appropriate capacity for your requirements. Certain manufacturers may provide precise guidance on how deep you should fill it, but an inch from the top is generally sufficient to enable the inner lid to latch securely while keeping it out of touch with the contents, since heat may be passed through the cover.

If you get new vacuum flasks, it is worthwhile to try them out before sending your children to school with them, since this will give you an indication of how long their soups or mac and cheese will keep hot.

Preparing a Thermos for Hot Food

Since a thermos can only operate correctly and insulate with liquids, semi-liquid or liquid dishes such as stews, soups, chilis, and pasta are great in a thermos as long as they have sufficient of sauce in them.

It is usually preferable to make a thermos just before you or your family members go for work or school, so that the food is only in it for a short period of time.

Fill your clean thermos halfway with boiling water and let it aside for a few minutes to heat up. Next, to guarantee that your meal is safe in the thermos, heat it to at least 165 degrees Fahrenheit. If you can heat the meal to boiling (about 212F), that’s even better. It may be simpler to heat on the stovetop rather than in the microwave.

Next, pour the hot water out of the thermos and add your meal. If you created the thermos for youngsters going to school, make sure they know to seek an adult for assistance in opening the thermos.

When you go home with the thermos, always dump away any leftovers, even if they are still warm.

When you open a thermos, if your hot food is chilly or your cold food is warm, throw it away; do not consume it. When the temperature in a thermos falls below 140F for more than two hours, germs begin to develop and the food becomes unhealthy. Similarly, if cold food becomes too heated, it becomes dangerous.

Using a Thermos for Cold Foods

If you want to use your flask for cold beverages or meals, you may chill it overnight in the freezer. Instead, fill it halfway with cold water and ice and let it to stand for about five minutes before emptying out and adding any food that has been kept at or below 40F.

You may add a freezer pack to your lunch bag along with your cold thermos for further food safety.

Invention of the Vacuum Flask/Thermos

Sir James Dewar, a Scottish scientist and chemist, invented a vessel with a vacuum jacket to securely store experimental gases in 1892. The Dewar flask, as it is known now, is still widely used across the world.

Sir Dewar did not patent his invention, therefore in 1904 a German business named Thermos GmbH took his idea and started developing and manufacturing their own Dewar flasks under the name Thermos. Dewar lost a patent battle with Thermos, despite being credited as the creator of the vacuum flask.

How a Thermos or Vacuum Flask Works

A vacuum flask is made up of two flasks that are one within the other. To generate a vacuum, most of the air has been expelled between these flasks. This vacuum implies that there are fewer molecules capable of moving heat from one flask wall to the other (either from the contents or from outside the flask).

Since the flasks are also reflective or silvered, heat is reflected away from the flask walls, and the airtight seal at the top prevents heat and air from going into or out of the thermos, however the lid or stopper may conduct some heat if the thermos is overfilled.

Cleaning a Vacuum Flask

Submerging any sort of thermos, vacuum flask, or food jar in water might cause water to seep into the vacuum between the two flasks.

If you have a stainless steel thermos, do not clean it with chlorine bleach since it will harm the welding.

After most uses, warm water and little detergent will enough to clean it, and depending on the breadth of the neck, you may be able to reach the bottom with a bottle cleaning brush. If the neck is too small, you may fill it with uncooked rice, water, and vinegar, then replace the top and shake it until the inside is clean.

Even if you wash your soup flask after each use, it will normally discolor with time. It may also emit a somewhat disagreeable odor. At this time, a more thorough cleaning is required. A spoonful of baking soda for every two cups of capacity in your thermos, mixed with warm water, is often sufficient to eliminate residue. You may also use cider vinegar. Let this solution to rest for a few minutes before thoroughly scrubbing and rinsing.

cubes and a couple of teaspoons of salt. Replace the cover and shake vigorously until the ice melts. The residue should be gone after a thorough rinse. Fill the thermos approximately a quarter of the way with tiny ice cubes for a more vigorous cleaning session.

If you put it in the thermos for a bit, or even overnight, a denture cleaning tablet in some warm to hot water (one tablet for every two cups of capacity) might remove stubborn mineral stains. Stand it in the sink as it will bubble up, and be sure to rinse well afterwards. You may repeat the procedure if this approach does not remove all of the stains.

If you store your soup thermos during the summer, add a teaspoon of salt or even a whole clove to keep it smelling fresh.


We hope you liked reading our post on food jars and discovered some valuable information such as what foods are acceptable for jars, how far a thermos should be filled, and even how to remove some of those tenacious stains and peculiar aromas that build up in any sort of vacuum flask.

The soup thermos is ideal for healthy meals on the move and is small enough to fit in school lunch bags, daypacks, or even an office tote, and we hope our evaluations of some of the finest soup thermoses available will assist you in deciding which will be best for hot or cold foods.


What is the top brand of thermos?

Our Top Choices for the Best Thermoses
Stanley Unbreakable Thermal Vacuum Bottle is the best overall thermos.
The Stanley Classic Travel Mug French Press is the best coffee thermos.
MiiR Food Canister is the best food thermos.
Best Travel Thermos: Stanley Classic Trigger Action Travel Mug.
GSI Outdoors Microlite 570 is the best budget thermos.
More to come…
•Jan 4, 2023

What is the best soup container?

Why we like it: The Zojirushi Stainless Steel Food Jar was one of the best at keeping soup hot in our testing. The 12-ounce thermos held tomato soup at a safe temperature (140 °F) for 6 hours, lowering from 193 °F to 144 °F.

Which thermos holds heat longest?

The Zojirushi SJ-JS10 had the greatest heat retention in our testing, followed by the Stanley Legacy Quadvac Thermal Bottle and GSI Outdoors Glacier Stainless 1 L Vacuum Bottle.

What is the best vacuum insulated food thermos?

The Stanley Adventure Vacuum Food Jar is the greatest thermos in general. It has outstanding hot and cold retention, is robust, and has a slew of features (including a strap for convenient carrying), making it our top choice.

What is the best thermos bottle USA?

2023’s Finest Thermoses
Overall winner: Stanley Classic Legendary Bottle.
CamelBak MultiBev is the most versatile.
Contigo Travel Mug is the best coffee thermos.
YETI Rambler Mug is the best thermos mug.
Hydro Flask Food Jar is the best food thermos.
SM-TA48 Zojirushi Stainless Mug.
Standard Mouth Bottle from Hydro Flask 24 oz.
Additional details…•December 2, 2022

Which is best thermos or Stanley?

If you want a true classic, go with Stanley. Use the Thermos brand if you want to save money. Klean Kanteen is the way to go if you want to help rescue the earth.

What is the No 1 soup in the world?

According to TasteAtlas, khao soi is the finest soup in the world, with tom yum ranking 12th and tom kha gai ranking 13th.

What is the best thermos for hot soup?

The Best Soup Thermoses Top Choice can keep your soups hot for hours. Soup Thermos by ITSLIFE. Look into Amazon.
The best thermos with a wide mouth. Soup Thermos by Nomeca. Check Amazon… Most Secure. Thermos of Yelocota Soup. Check on Amazon.
Very inexpensive. THERMOS FUNTAINER Soup Thermos. Look into Amazon.
Honorable Mention. Thermos DaCool for soup.
Mar 4, 2023

What is the No 1 best soup?

The world’s most renowned soups
Gazpacho (Spain) (Spain)
Harira (Morocco) (Morocco)
Laksa (Malaysia and Singapore) (Malaysia and Singapore)
çorbas Yayla (Turkey)
Minestrone (Italy) (Italy)
Tom Yum Yum (Thailand)
Soup with Tortillas (Mexico)
Verde Caldo (Portugal)
More to come…

How long does a thermos keep soup hot?

The lid serves as a bowl and has vacuum insulation to keep your soup hot for up to 15 hours. The thermos’s large opening makes it simple to fill with warm soup without spilling.

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