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Customer Review

531 of 540 people found the following review helpful
5.0 out of 5 stars Convenienece and performance, November 11, 2002
Verified Purchase(What's this?)
This review is from: Thermos 12-Ounce Stainless-Steel Tea Tumbler with Infuser (Discontinued by Manufacturer) (Kitchen)
Most problems with mugs I tried in the past are solved in this product. This mug comes with a tight sealing lid so that you can put this mug with hot drink in a brief case upside down and run to a subway station. No spilling, and this product is better than a plain Saran Wrap solution. The sipping lid has a deeply recessed bottom where you have a hole for a liquid to come out. That is, the spill risk is very low, even in pitching and rolling subway in Boston. So, you rarely need to use the sealing lid unless you want to steep tea in it or put the mug in a backpack. (See the other review to learn how to brew tea in it.) Also, because of this deeply recessed sipping lid, this mug is easier to use spill-free while laying on a sofa or maybe even on a bed with a high pillow!

Lack of handle presents little inconvenience at any situation I've used this mug. A both handed person like myself needs not worry which way to put the mug, which way to put the sipping lid, and which hand to hold the mug. It's very left hand friendly, more so than having two handles on each side.

If criticism is an obligatory part of a review, I offer a few. This mug's tea leaf strainer is given enough space for most loose teas, but it is not enough for some herbal infusions, particularly whole dried preparation of chamomile flower. This mug's advertised capacity is 11 ounces, but the line specifying the maximum fluid level is actually 275ml (10 ounces). I wonder if they could make it a bit taller for increased true drink capacity and enough space for chamomile to expand. The leakproof lids depend on silicon gaskets so I would wash them by hand.

Overall, this mug is slim, tall, leakproof, beautiful design, and very functional and compact. The quality of tea made in this mug is as good as ones made in tea pot as long as the leaf is of good quality (sentimental value not included). The diameter of the mug at its widest (around lid) is only 75mm (3in) so it will fit in most briefcases together with a book and couple manila folders. Unlike so many poorly designed products, you know this one was designed by designers and engineers who love tea and coffee.

* * *

I wrote this original review quite some time ago, but I thought to add that I now own three of this product, and I still use this product daily (home, office, travel) and I still think this mug is totally awesome for people who appreciate high quality tea. STILL HIGHLY RECOMMENDED in 2010.

Addendum May 2011.

Most common question I get is how best to clean the inside of the tea mug when it gets all browned. The answer: fill the tea mug with hot tap water, dissolve a teaspoon full of oxygen bleach powder (sodium percarbonate aka Oxyclean), attach the lid and the cap, gently shake a few times, and loosen the cap immediately. Leave it in the sink for 10 to 20 minutes. Make sure the lid is attached loosely, and never tightly. Dump the stuff, rinse it with water, and you're done. Chlorine bleach (Chlorox) will do the job just as well, but you'll have to deal with the bleach odor for a few days. Oxygen bleach leaves no odor, but it forms oxygen gas, which builds up the pressure inside and explode the lid, if left attached tightly (I've done that!). That's why I emphasized to loosen the lid when leaving it in the sink.
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Showing 21-26 of 26 posts in this discussion
Posted on Jan 25, 2013 11:32:33 AM PST
ricky says:
This comment is F'ing BEAUTIFUL! i have no wish to read anymore comments on anything as they will never compare. you sir, have made me cry.

In reply to an earlier post on Jan 29, 2013 10:37:34 AM PST
Jeff Slarve says:
Ryuji - I don't think point of baking soda is that it's a great cleaner, per se, but its limited solubility lends itself to making a nice barely-alkaline paste that allows you to get more of the cleaning agent directly onto the stain with the added benefit of being a mild pseudo scouring agent. Percarbonate is a great destainer but I wouldn't want to get it on my skin for very long (about the same ph as soda ash, and has a lot of peroxide, quite a bit more than what you get in a 3% peroxide solution over the counter). With percarbonate, you would just want to give it more time to do its thing, but don't touch it much.

In reply to an earlier post on Jan 29, 2013 11:41:02 AM PST
B. Yip says:
Bleach is a very mild oxidizing agent, emphasis on the mild--it is not harsh. It does not hurt you to drink trace amounts of bleach. Unless you're in Europe, your water is most likely treated by adding bleach to kill the bacteria from the plant to your house. In fact, to rid yourself of bacteria in water, add a cap full of chlorox to a gallon of water and its ready to drink.

In any case, I would wash the tanins (that brown stuff) with ajax or commet. Just be sure to soap after and rinse well.

Posted on Jan 29, 2013 11:54:19 AM PST
Last edited by the author on Jan 29, 2013 11:54:58 AM PST
Brian S. says:
I'd urge anyone asking how to clean it to pick up a magic eraser, either name brand or off brand (shouldn't matter.) There are no chemicals involved, it cleans with water. The sponge is made out of melamine foam which hardens into a very fine near-glass hardness. The tea stains (or coffee or whatever else) are pretty much scraped away with just a few strokes.

Posted on Feb 2, 2013 9:17:59 AM PST
Reader5005 says:
The silicone gasket is more durable than rubber; should be fine in the dishwasher, even on bottom rack. Most silicone is rated to take up to 450 F; and dishwashers don't get much higher than 212 F during wash and about 300 F max (bottom rack) during dry. The only drawback to washing nissan/thermos in the dishwasher is that some models have air pockets in the lid that may get water and take awhile to dry out.

In reply to an earlier post on Dec 12, 2013 5:00:19 PM PST
N. Taber says:
This is the second post I've seen mentioning Ajax or Comet, would Bar Keepers Friend or Bon Ami work as well? I believe Bon Ami is a milder agent than Ajax or Comet but nearly as effective iirc.
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