Tea in the thermos is not a good idea if you want to keep tea in a vacuum insulated mug.
My thermos.The second one is from Tiger.For a short time, the Zojirushi blue one is okay.Both brands are Japanese.
Those half gallon (2-litre) double-wall glass vacuum flasks with big clumsy aluminum outers and a cork stopper were the ones that were popular back in the day.The family drank tea throughout the day.We put some tea leaves in it in the morning and filled it with boiling water before the tea reached the bottom.We discard the old ones when they get too old or pale.We put in some new ones because we were lazy.We got evenzier by not liking it.We were poor and didn't have much.Anything that had tastes was better than nothing.Forty years ago, that was the case.
I tried to make tea with the contemporary kinds of thermos but it didn't work out.The insulated bottles were only used for soup or hot water when it was cold.
I would carry a lot of flasks that are made ofstainless steel.Except when it's poor quality.Is it possible to see the rusts at the joints?I have stopped using this one since I last used it.Buffalo is a brand from a spin off.
Alan Macfarlane wrote about the role of tea during the wars in his book.The soldiers won the wars because they were rationed weak tea for filling their canteens during battles, he wrote.
I wasn't interested in finding out about the effects of weak tea on winning wars, but I was reminded that a large proportion of tea drinkers were like us when we were young.Weak tea can be kept in the canteen through the day because the change of the less stable tea substances in it is proportionally lower.It also means less concentration of tea substances that further change upon storage, so the taste could be a bit more stable.
Is it possible to make a tea that keeps acceptably in a thermos but not as weak as a ready-to-drink product?I could have tea on the go if I succeeded.I could have tea whenever and wherever I went on all my hiking and city excursions.
Chemical changes for certain tea substances would lead to bad taste due to the effective heat retention character of the thermos.I can't put tea in the thermos.I can only see the container.
While preheating the thermos with warm water, I prepared the tea in a separate pot.I preheat the thermos to 70C with 20 degrees for heat loss during the trip since I know heat would kill the taste and health contributive substances in tea.
The modern thermos are convenient.I don't think the plastic coating on some of the products is safe to store for long periods of time with hot beverages.There is a tea stain inside the crevices.A reader once said I should use a denture tablet.When the stain is light and fresh, it works.
The Minhongs I began with were similar to the ones used by the British in earlier continental wars.It was ok after a few tries.For a few hours, I kept in the thermos.When properly prepared and drunk, the tea was still notable.A lot more like tea than bottled products.
The tea that I knew would keep the best was pu'er, the tea I had when I was small.The shu type had a better profile.
Four years have passed since I brought tea in a thermos for a trip to the cinema.I would personally drink most of the teas that I have tested.
A small amount of water is used for green tea.The longer the tea stays in the flask, the less leaves you should use.
The best resemblance to a freshly prepared cup of tea after a few hours is in descending order.
The types of Pu'ers include machine-made black tea, matured shengcha pu'er, brown styled, full leaf, white, and higher-fired green tea.
The amount of taste change or loss is only defined by this descending list, so selections with more taste in the beginning may still taste better even if they are lower on the list.One example is classic style Phoenix oolongs.
A researcher of the Tea Research Institute in Hangzhou once told me that her husband gave up using better quality tea leaves because the tea liquor lose almost everything once bottled.He said that the money for the quality is wasted.
There is a line between tea kept in a thermos for a few hours and ready-to-drink products.Health content asides, the taste, temperature, and the independence from marketing influence to decide what tea you can drink, are to me strong enough reasons for carrying that bit of extra weight for 800ml of a quality tea of my preference.
I prepare tea in a thermos for the night and it tastes like detergent.
Sorry for the late reply.There is a strange smell in certain situations, but we don't know why.It is more likely to happen with certain kinds of green and black tea, as well as when the temperature is too high.
We want to do a better study before we conclude what really happened.
We have been able to avoid that by first pouring the tea in a separate vessel and then slowly pouring it into the thermos.It's not a good idea to prepare tea the night before.Many tea selections turn out to be too strange after a night in the thermos.
The tea that changes the least is Shu cha puer.There are both baked and medium baked oolongs.Black and green teas are unreliable.
That is a very difficult question to answer.The bottom portion of the tea in a thermos can get quite cold.You can bring two thermos for half the day to solve that problem.For the second half of the day, fill it with a tea that sustains better, such as a shu cha pu'er.
Purchase a genuine thermos 1.2L or 2L flask.It only drops to 70 degrees after 12 hours if I start with 90 degree water.It is still at 60 degrees after 24 hours.