How Long Does Coffee Stay Warm In A Thermos

Many coffee drinkers like to stay within the range of 50600c roughly 1201400f because its supposedly when the coffee notes shine both methods suggest that after 10 hours inside the flask the coffee will be about 540c which is still within the enjoyable range. Depending on the need and how long the milk needs to stay warm will determine the quality needed in a thermos flask.

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how long does coffee stay warm in a thermos

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For those of us on my side of the pond thats 140 degrees fahrenheit.

How long does coffee stay warm in a thermos. Brought to you by leaftv. For example a regular quality thermos flask will keep the milk warm for about 12 hours and a lesser quality one six to eight hours. A thermos is great for keeping coffee hot for an hour or two without too much loss in the quality of the coffee.

But for a full day thats asking too much. Of course if we were to bring the flask outside in cooler temperatures than the assumed 250c the coffee would cool down quicker. After six hours the water has cooled to 149 degrees still very much drinkable warm coffee.

Thermoses must be preheated before filling. Plus the design of the yeti means that you have to unscrew the top before every sipno big deal for carrying cold water on a hike but annoying for drinking coffee on the go. If it is above 60 celsius then it is still safe up to 9 hours after brewing.

Its definitely serviceable but at 30 its also on the more expensive end of all the mugs we tried. Not only will the boiling water kill any bacteria that may be in the thermos it will also heat it up so your coffee doesnt cool when it is poured into it. Let it sit for three to five minutes pour it out then immediately pour your coffee into it.

How many hours depends on each carafe make sure to read the descriptions that come with it. Yeti doesnt offer a 16 oz option so we went for the 18 oz the closest to the other containers capacity. Some claim they keep hot beverages for 12 hours some claim to do more others less.

However as the quality declines so does the amount of time that the milk will stay warm. Bacteria grows quicker between 40f and 140f so perishable foods should not stay at that temperature range longer than 3 hours therefore hot foods should be heated to 212f aka too hot to handle before packing in a thermos. While the thermos is keeping your coffee hot at the same time it is also allowing the hot coffee to slowly stew.

You can use a thermal carafe which will keep your coffee warm for hours. Boil a kettle of water and fill the thermos to the brim. Do it on several days to have a significant result.

If you want to go by the book measure the temperature of the coffee inside the thermos 5 hours after brewing.

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