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Will boiling water ruin green tea?

myjapanesegreentea.com

161–170 of 219 posts

Re: Will boiling water ruin green tea?

#161
post #151

Next question is whether the ritual washing of tea and warming of cups is necessary

Maybe? It’s like blooming coffee, it makes a difference, but how much does that matter to the specific drinker? The same goes for water temp.

I found that I could tell the difference but for tea I regularly drink I couldn’t be bothered to break out a thermometer. But if it’s the good stuff I totally would be doing more of the ritual.

Re: Will boiling water ruin green tea?

#162
post #158
post #128

Earlier quoted context omitted.

No, it is very hard to convert. The US has about 4% of the world population. Adapt. It's not worth the communication problems.

The US customary units have a lot advantages. For example: In Fahrenheit, 0 is really cold while 100 is really hot. In Celsius, 0 is kind of cold while 100 is damaging to life. With feet and inches, you can easily divide a foot by 2, 3, 4, and 6 with no repeating decimal digits. It's the same reason the ancient sumerians used base 60 for their number system. With liquid measure, a cup is roughly what would be conside…

0 is freezing, 100 is boiling.

12 is a handy number but decimal calculation isn't difficult either, especially when all your units use the same.

What is a cup? How do you do calculations with a third of a cup etc?

I know a cup is roughly 200 mil. From exposure in life I know 200ml is about a cup of tea and 300ml is about a mug of coffee /can of come, 500 is a big can of beer. How many cups are in a can of beer?

Re: Will boiling water ruin green tea?

#163
post #38

Earlier quoted context omitted.

> Yeah it seems so dried out you wouldn't have too much to worry about. How about the people touching / sneezing on it in the packaging factory?

Not sure about most things transferred via touch/sneeze but I imagine lack of moisture would cause anything living to die fairly quickly.

Except aflatoxin.

Re: Will boiling water ruin green tea?

#164
post #128

Earlier quoted context omitted.

In some places, most of your instruments will likely be in Fahrenheit and Fahrenheit is what you use daily for most tasks. It only makes sense that you use Fahrenheit as your reference point. A home in other places is more likely to have Celcius, and you'll likely use it. It isn't like it is difficult to convert.

No, it is very hard to convert. The US has about 4% of the world population. Adapt. It's not worth the communication problems.

F to C -> subtract 32 and divide by 1.8

C to F -> multiply by 1.8 and add 32

This sounds messy but works out well for a lot of temperatures we are used to, for example... 0C is 32F ... 100C is 212F ... 20C is 68F ... 30C is 86F ... etc.

Re: Will boiling water ruin green tea?

#165
post #158

Earlier quoted context omitted.

The US customary units have a lot advantages. For example: In Fahrenheit, 0 is really cold while 100 is really hot. In Celsius, 0 is kind of cold while 100 is damaging to life. With feet and inches, you can easily divide a foot by 2, 3, 4, and 6 with no repeating decimal digits. It's the same reason the ancient sumerians used base 60 for their number system. With liquid measure, a cup is roughly what would be conside…

0 is freezing, 100 is boiling. 12 is a handy number but decimal calculation isn't difficult either, especially when all your units use the same. What is a cup? How do you do calculations with a third of a cup etc? I know a cup is roughly 200 mil. From exposure in life I know 200ml is about a cup of tea and 300ml is about a mug of coffee /can of come, 500 is a big can of beer. How many cups are in a can of beer?

A can of beer is 12oz or 16oz.

Re: Will boiling water ruin green tea?

#166
I think one questions that people here might be having is how is the water of correct temperature is actually prepared. Do people just know how to heat water to 60C? That sounds unlikely, doesn't it?

In traditional tea ceremony, known amount of tap water is added to boiling water. Comes out okay if protocol is punctually followed.

In more casual situations, there are buttons and lamps on electric kettles to cycle through common temperatures. That works if you are going to serve dozen guests at once.

Re: Will boiling water ruin green tea?

#168
post #110

It definitely will. After a couple years of experimentation and testing I've found anything over ~200F is basically undrinkable. It took me so long to figure this out because there were a lot of confounders -- I drank a lot of tea over the holidays back home, and while my parents' town is on the same water source I swear their florination is different, in a way that changes the mouth feel of the tea. I also had a new…

200F = 93.3C, 190F = 87.8C. Really, we're talking about boiling, why would one even consider using Fahrenheit?

Unfortunately, a lifetime in the U.S. has left me with poor intuition for Celsius. The conversion isn't difficult to do in ones head and for laboratory work, naturally, it's just as easy to read one thermometer scale as another. For everyday life, weather reports, fever thermometer readings, thermostats and such, it is just a nuisance to convert from Fahrenheit and back. If someone tells me it's 15 degrees C outside I have to do mental arithmetic to know if I should take a sweater. Furthermore, from a purely logical perspective perhaps we should even consider using Kelvin.

It's a completely different story for distance, weight and volume. Metric measurement in these cases are more intuitive for me, and they are clearly superior too. Millimeters are so much easier to use than fractions of an inch (7/32 inch -- that's a ridiculous system). In the U.S., an ounce of flour weighs less than an ounce of gold. Who even knows how much a grain of gunpowder is in units anyone else uses (one grain is approximately 1/16 gram). There are three teaspoons in one tablespoon, but only two cups in a pint, 2 pints in a quart and 4 quarts in a gallon.

I'd be happy to switch from imperial to SI units for length, mass, and volume. I'll gladly switch slugs to kilograms and pounds to Newtons, but I will miss Fahrenheit.

Re: Will boiling water ruin green tea?

#169
post #158
post #128

Earlier quoted context omitted.

No, it is very hard to convert. The US has about 4% of the world population. Adapt. It's not worth the communication problems.

The US customary units have a lot advantages. For example: In Fahrenheit, 0 is really cold while 100 is really hot. In Celsius, 0 is kind of cold while 100 is damaging to life. With feet and inches, you can easily divide a foot by 2, 3, 4, and 6 with no repeating decimal digits. It's the same reason the ancient sumerians used base 60 for their number system. With liquid measure, a cup is roughly what would be conside…

As a non-American I don't understand the Fahrenheit vs Celsius arguments. What's special about 0F being really cold and 100F feeling really hot? I find that -20C being really cold and 30C really hot quite intuitive and easy to understand. Also in terms of weather it is easy to understand that below zero temps snow and ice will form. Add the convenience that Celsius is basically just an offset of Kelvin and I really don't see the appeal of Fahrenheit at all.

Re: Will boiling water ruin green tea?

#170
post #156

Afaik not using boiling water is because it burns and that causes cancer

I think you're confusing boiling with searing. I guess anything could be a carcinogen at the right dosage but generally the advice is not to sear meat because that results in carinogenic particles. There is a similar process in deep frying.

But boiling is a different process, especially with tea where even if the water is boiling when poured it will rapidly cool down below the boiling point. As the article explains, boiling water extracts different substances to different degrees than warm/hot water. Specifically it will extract more of the bitter-tasting compounds and can break down others.

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