Want the hot water in your thermos to last longer? Just coat the lid with this 1 kitchen tool

photo: Instagram/@yulie_akhyan

Brilio.net – Hot water stored in a thermos can ideally stay warm for a long time. However, in reality, many people find that the water in the thermos gets cold very quickly even though it has only been stored for a few hours. This condition is often considered normal due to the age of the thermos, even though the cause can be more specific.

One factor that is often overlooked is the part of the thermos that is no longer tight, especially the lid. A lid that is starting to lack vacuum or a worn rubber seal makes it easy for heat to escape without realizing it. As a result, the thermos insulation function does not work optimally even though the body of the thermos still looks good.

Apart from the lid, the thermos’ joints and threads also affect the heat resistance of the water inside. Even a small gap is enough to cause the temperature to drop quickly, especially if the thermos is opened and closed frequently. Therefore, it is important to understand which part is problematic so that the thermos can still be used optimally.

So, if you encounter a problem like this, there is a simple trick to solve it. Check out the tricks below BrilioFood summarized from Instagram @yulie_akhyan on Monday (29/12).

How to make hot water in a thermos last longer.

1. Pour hot water into a thermos.

Photo: Instagram/@yulie_akhyan

Fill the thermos with hot water as usual, make sure the water is really boiling so that the initial heat is maximum. It is best if the thermos is clean and dry so that no cold temperatures remain in it. Temporarily cover the thermos so that the heat does not escape quickly while preparing the next step.

2. Line the inside lid with aluminum foil.

Photo: Instagram/@yulie_akhyan

Take the inner lid of the thermos, then cover the surface with enough aluminum foil to close tightly. The aluminum foil helps reflect heat back into the thermos so the water temperature doesn’t drop quickly. Make sure the foil is installed neatly and does not interfere with the position of the lid when installed.

3. Replace the lid tightly.

Photo: Instagram/@yulie_akhyan

After covering it with aluminum foil, put the lid back on the thermos and make sure the threads are tight. A tighter lid will reduce the gap between heat escape and help maintain the vacuum effect in the thermos. In this way, the hot water in the thermos can usually stay warm longer than without the additional layer.

FAQ About tips for choosing a quality thermos.

Choosing a quality thermos flask is important so that hot or cold water can last as needed. The right thermos is also more durable and doesn’t cause problems quickly even if it is used frequently.

1. What are the characteristics of a thermos that still has good durability before buying it?

A quality thermos usually feels sturdy when held and there is no excessive sound of water echoing inside it. The lid closes tightly without gaps and does not come loose when rotated. Apart from that, a good thermos generally has a balanced weight, not too light.

2. Does the inner material of the thermos affect the temperature resistance?

The inner material really matters, especially if you use food grade stainless steel. This layer helps maintain a more stable temperature and does not rust easily. Avoid thermos with an interior that looks dull or is easily scratched.

3. Why is the thermos lid often the determinant of quality?

The thermos lid plays a big role in maintaining the vacuum effect so that heat or cold does not escape quickly. Lids with thick and elastic rubber seals are usually more durable. If the lid feels hard or the rubber comes off easily, the quality of the thermos is questionable.

4. Do expensive thermos bottles always last longer?

Price does not always guarantee quality, but quality thermos are usually not sold too cheaply. Thermos that are too cheap often sacrifice the thickness of the material or the quality of the lid. It is better to focus on materials, closure systems and brand reputation.

5. How do I check the function of the thermos after purchasing it?

Fill the thermos with hot water, close it tightly, then let it sit for several hours without opening it. If the water temperature still feels hot and the outer wall of the thermos doesn’t get warm, it means the insulation function is working well. This simple test can be an indicator of the quality of the thermos before routine use.

(brl/is)