It all depends on which TOH you are talking about.

There is TOH from Shanghai Export Company brand found in stores.
http://www.shanghaitiantan.com/en/products_lucha.aspx
About the only thing this TOH has going for it is because it won an
international taste award. It will make the hairs on your neck
standup and reaching for the antacid. It is heavier and will ping a
cup when dropped. It is larger cut leaf. There is nothing wrong with
that perse but that kind of tea I think more medicinal. I drink this
during flu season. In due respect from this group the taste varies in
harshness. The Arabic version in the lower right is tolerable. There
is a minty note in the aroma.

There is TOH also called pearl tea from Zhejiang Province which
adjourns Shanghai Province that is a milder and more aromatic green
tea. It is smaller cut leaf with some whole. Look for the version
where the pearl is very light in density. It is so light it is
affected by static and some will cling to your finger when touched. I
got this one from a jar in SF Chinatown simply labeled with the Zhu
character.

In both cases the dry semi irregular pellet is smooth and dark grey.
The original gunpowder came from one town in Zhejiang. Now it
includes the whole province. So taste isnt a given. When I taste tea
perse I always note the esophagus and stomach.

Jim

On Oct 3, 2:54 pm, Prof Wonmug > wrote:
> I have about 200g of Gunpowder Temple of Heaven. I generally like this
> tea and I think I have the brewing parameters about right (~1.5-2.0
> g/cup for 4:00 at 160°F).
>
> But I've noticed that after several cups, I get a mild sensation in
> the back of my throat that feels more or less like heartburn. I say
> "more or less" because I'm on very strong prescription medication to
> control stomach acid, so I'm pretty sure it isn't really heartburn. I
> haven't had that for 20 years or so.
>
> Tea contains caffeine, which can cause a relaxation of the LES (lower
> esophageal sphincter) allowing stomach acid to squirt up into the
> esophagus. This sounds like it might be the problem.
>
> On the other hand, several web sites recommend tea to aid in
> digestion, especially green tea. ;-)
>
> Others claim that herbal teas with even trace amounts of peppermint,
> chamomile, ginger, licorice root, or catnip help the stomach lining
> repair itself.
>
> Is anyone else experiencing this?
>
> Any remedies?