Learn How To Make Tea In A Thermos Flask

Nobody really loves that weird flask taste in tea. Chin up, you can make fresh tea in a thermos flask and enjoy a good brew!

Making tea in a thermos is straightforward. Once simply add the hot water, the ingredients, swirl or stir the thermos to blend everything well, and enjoy.

If you want to make a fresh cup of tea, we show you everything you need to know to brew a perfect drink with your thermos flask.

Read Next: How to make a latte with a cafetiere.

The Perks Of Making Tea In A Thermos Flask

You have probably encountered this problem before. You prepare some tea and store it in a vacuum flask only to find out that it has a strange taste after a couple of hours. Urg, right?

This is often the case when you store white tea in a thermos flask. However, it’s worth noting that this aftertaste has nothing to do with the condition of the milk or any of the other ingredient used to make the tea. On the contrary, it has everything to do with how the brew is prepared inside the thermos. 

The preparation process is very important if you want to succeed in making tea in a thermos flask. In this article, we are going to share how you can make tea in a thermos flask using a simple process that guarantees success. No more iffy tea!

If you love DIY fixing jobs, learn how to fix a thermos flask that no longer works as well as it should.

Understand Which Ingredients Reacts Badly To A Thermos Flask

How to Make Tea in a Thermos Flask?

This is an essential first step to understanding how thermos tea goes “bad.” Some ingredients are notorious for reacting badly to a thermos and unfortunately, these additives are loved by some because they make tea taste great (ironically). Try to avoid adding the fresh variety and the tea bags flavoured like them.

Some of the tastiest and guilty ingredients are:

  • Cinnamon.
  • Garlic.
  • Ginger.

However, not all is lost. If you simply cannot live without your ginger tea, there is hope! In most cases, flasks that react badly with these ingredients are substandard products. A lot of people have found that their tea remains tasty – even with these additives – when they switch their old thermos for a high-quality flask.

How To Make Black Tea In A Thermos Flask

​​Making black tea in a thermos flask is a straightforward process.

  1. Place the tea bag inside the thermos flask.
  2. Boil some water and add the hot water to the flask.
  3. Depending on your preference, you can add sugar at this point and mix by swirling the tea for approximately 30 seconds. Use a long spoon or gently roll the flask between your palms to swirl the water.

For the best results, always use very hot water. This way, you eliminate the need to swirl the thermos flask for the tea to mix completely. You can also mix everything in a separate cup with a spout before pouring the liquid into the flask.

Are you curious about the magical abilities of a thermos? Then head on over to our article that explains how a thermos flask works.

How To Make White Tea In A Thermos Flask

Making white tea in a thermos flask is a little different. 

  1. Boil the water in a pan or electric kettle.
  2. Carefully pour the hot water into the flask.
  3. Add your desired amount of milk.
  4. Add the teabag.
  5. At this point, you can also add your desired amount of sugar.
  6. Mix for a couple of minutes.

Following this procedure to make white tea can help you to avoid a strange-tasting cup of tea.

How to Make Tea in a Thermos Flask?

Cleaning The Flask Also Keeps Tea Tasting Fresh

Practising good cleaning habits will go a long way to keep tea inside a thermos safe for consumption and also tasty. Very often, the preparation method is not to blame when the tea has an off-taste. Sometimes, dirt or other residues inside the thermos flask can cause the contents to develop a strange taste.

For this reason, it is essential to clean the flask after every use. If your flask came with a user manual, follow those instructions but otherwise just give it a good rinse with some dishwashing liquid and water (make sure that no dishwashing residues remain behind). Also, allow the flask to dry properly before you close the lid and store it. A moist interior could also cause a bad taste the next time you make some tea.

If you want more tips and tricks to keep your thermos flask in the best shape ever, grab our free guide on how to clean a thermos flask.

Drink The Tea As Soon As Possible

Avoid leaving the tea in the flask for a very long time. More often than not, when tea is kept in a thermos flask for an extended period of time, the brew tends to have a strange taste. This can be avoided if you make the tea right before you drink it or roughly an hour before you plan on drinking the tea. To be fair, a good-quality flask should keep your tea tasting great after two hours or more.

A Quick Summary On How To Make Tea In A Thermos Flask

  • A common complaint with thermos flasks is that the tea tastes weird.
  • This dank taste can be caused by ingredients like garlic and cinnamon or incorrectly preparing tea inside a flask.
  • A good-quality flask will not react badly with ingredients like garlic and cinnamon.
  • Good preparation tactics are as simple as adding the teabag, water, and milk in a certain order.
  • Always use very hot water to get the best results.
  • A clean flask and not keeping tea too long in the flask will also keep the thermos fresh.
  • Always prepare tea inside a thermos with care. Avoid spilling the boiling water on yourself or someone near you.