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ISO3103 Tea Preparation [pdf]
- codeulike 5y agoGeorge Orwell weighs in on tea-making, 1946 https://www.orwellfoundation.com/the-orwell-foundation/orwell/essays-and-other-works/a-nice-cup-of-tea/ https://www.orwellfoundation.com/the-orwell-foundation/orwel...
- flemhans 5y agoI'm surprised he adds milk. Might be a British thing.
- deeg 5y agoI'm a math and tea geek and since it's so very rare when the two worlds overlap I'll take the opportunity to mention it here. The British argument of tea-or-milk-first helped lead to a formalization of random experimentation and the null hypothesis: https://en.wikipedia.org/wiki/Lady_tasting_tea https://en.wikipedia.org/wiki/Lady_tasting_tea
- pwnSh 5y agoThe method consists in extracting of soluble substances in dried tea leaf, containing in a porcelain or earthenware pot, by means of freshly boiling water, pouring of the liquor into a white porcelain or earthenware bowl, examination of the organoleptic properties of the infused leaf, and of the liquor with or without milk or both.
- aloe_falsa 5y ago> the liquor with or without milk or both Both with and without milk? Must be how Zen monks drink it.
- isk517 5y agoThe student came to the Zen master and ask 'Would you like your tea with or without milk?' to which the Zen master replied 'I will take my tea with milk, without milk, and both.'
- xcambar 5y agoI'll get it if that's a joke... but I have to ask: is it a joke or is it real? If real, expect me to expect source material:)
- michaelhoffman 5y agoIt's a joke, or it's real, or both.
- beepbooptheory 5y agoI can assure you, its real
- isk517 5y agoHonestly, I thought I was making a joke based on a typical format used for Zen Koans but now I'm not so sure.
- bomz24 5y agoNIH Admits Fauci lied to congress and funded covid-19: https://theintercept.com/2021/10/21/virus-mers-wuhan-experiments/ https://theintercept.com/2021/10/21/virus-mers-wuhan-experim...
- arresthimnow 5y agoNIH admits Fauci lied to congress and FUNDED COVID-19 https://www.zerohedge.com/markets/fauci-lied-knowingly-willfully-and-brazenly-interview-dr-richard-ebright https://www.zerohedge.com/markets/fauci-lied-knowingly-willf...
- yaacov 5y agoWhat’s the purpose of this test? Why would they use boiling water for green tea?
- yakubin 5y agoI've read in one of previous threads about it that it's for the purpose of comparing different teas accurately. It's not supposed to result in the best possible tea. Instead it's supposed to make the tea's aroma and taste as clear as possible and it's supposed to be used uniformly across different varieties of tea, so that they can be compared accurately without much error margin introduced by the preparation itself. This may be entirely wrong though. After all, it's just something someone wrote on the Internet...
- jet_32951 5y agoIt's just odd that one would not make green tea at anywhere near the right temperature. Green tea is simply not comparable with black; they are fundamentally different. It is as if there were an ISO standard on the quality of fruits and they are "compared" by assessing color (deviation from yellow is a fault, increasing by reflected wavelength difference).
- lonjil 5y agoIt's not about comparing quality, it's about comparing consistency. Brands want their blends to be consistent from year to year. So every year they might create hundreds or thousands of different combinations of the specific teas they've acquired, until they find one that tastes as similar as possible to the blend they had last year. Also, green tea is just fine at boiling, if it isn't of poor quality :)
- jet_32951 5y agoDe gustibus non disputandum.
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- fauscist1984 5y agoNIH admits Fauci lied about funding Wuhan gain-of-function experiments https://www.washingtonexaminer.com/opinion/nih-admits-fauci-lied-about-funding-wuhan-gain-of-function-experiments https://www.washingtonexaminer.com/opinion/nih-admits-fauci-...
- t34zesrg 5y agoNIH admits Fauci lied to congress and funded covid-19: https://www.nationalreview.com/news/nih-admits-to-funding-gain-of-function-research-in-wuhan-says-ecohealth-violated-reporting-requirements/ https://www.nationalreview.com/news/nih-admits-to-funding-ga...
- bo0tzz 5y agoHere's a video of Tom Scott preparing a cup of tea according to these instructions: https://www.youtube.com/watch?v=nAsrsMPftOI https://www.youtube.com/watch?v=nAsrsMPftOI
- satvikpendem 5y agoThe tea temperatures are all wrong, they should be: Black tea - 95 C Oolong Tea - 80-90 C (depending on oxidation level, more = higher temperature) Green Tea - 75 C Yellow Tea - 70-75 C White Tea - 70 C Using boiling water will scald the leaves and leave a bitter taste.
- parhamn 5y ago> Using boiling water will scald the leaves and leave a bitter taste. https://en.wikipedia.org/wiki/Samovar https://en.wikipedia.org/wiki/Samovar
- timeon 5y agoIs not that for black tea?
- Cerium 5y agoBrewing at less than boiling leaves a lot behind in the tea. If the tea is good, it should be able to be brewed well at boiling.
- satvikpendem 5y agoIf you've had high quality loose leaf tea, you'll know that that's not true. It's like saying you need to grind coffee very finely to extract all the flavor when in reality, different grind levels are for different types of procedures like espresso, filter, pour over etc. If you try to use super fine coffee grounds for a pour over, you're gonna have a bad time.
- Cerium 5y agoI don't know a whole lot about coffee, but I stand by that good tea can be brewed well using boiling hot water. I run a direct to consumer tea business and much of my family is involved in the farming and production of tea, specifically Wuyi oolongs. Very rarely do I intentionally reduce the temperature more than a few degrees - and that is usually by boiling the water and then waiting a minute before starting.
- deleted 5y ago[deleted]
- JasonCEC 5y agoI work with tea both professionally[0] and semi-professionally[1] and will clarify that: - this is for commercial tea, not specialty or "ceremony" grade tea - all of the big commodity houses, blending houses, brand buyers, etc have their own modifications on the standard, and this ISO tea prep standard is most definitely not the "standard" - From elsewhere in the thread: all great tea can be brewed with boiling water. The idea that green tea (or any other type of whole leaf tea) should be brewed with something under ~100C is a technique used by merchants to sell you bad tea. [0] www.gastrograph.com [1] teatechnique.org/
- satvikpendem 5y agoI made the other comment about not using boiling water. I've also run a tea shop and have imported very high quality tea. I've tried green and white teas with boiling water and they definitely did not taste as good as with 70-80 C water. At boiling temperatures they taste somewhat burnt and astringent.
- stryan 5y ago> From elsewhere in the thread: all great tea can be brewed with boiling water. The idea that green tea (or any other type of whole leaf tea) should be brewed with something under ~100C is a technique used by merchants to sell you bad tea. Is this "can be brewed" as in you will end up with a beverage that is drinkable, or that you think that in general green tea is fine to be brewed at 100C. The former I can understand (especially with cheap bagged green tea) but I'd be very surprised at the later considering that goes against pretty all modern and traditional guidance I've heard or read.
- JasonCEC 5y agoTl;dr: yes, use boiling water on very high end Chinese green tea for best results. Longer Explanation: In the Chinese tea tradition, water temperature is referred to by the size of bubbles during boiling (crab eyes = small bubbles (cooler) vs fish eyes = large bubbles (hotter)). In theory, all water at boil is 100°c, but in practice, there is often a temperature gradient within a kettle and only the gas (the bubbles) is at exactly 100°c (assuming you're at sea level), which is why even some culinary recipes will call for a "rolling boil". In any case, the strength of the stream when pouring will have a greater effect on the resulting flavor profile of very good green tea than the variation in bubble size, as bubble size is a variance of ~2°c while water can lose up to 5°c in a high slow pour. Thus, boiling water at crab eyes with a thin slow (but not high) pour is the method used for high end Chinese green tea amongst high level Chinese tea practitioners.
- kixiQu 5y agoAnd it costs sixty three dollars to see the real thing: https://www.iso.org/standard/73224.html https://www.iso.org/standard/73224.html
- discreteevent 5y agoFirst, scald the pot!
- visarga 5y ago> 5 min at 100 degrees That would make a bitter cup of green tea. Green tea infuses best at 80 degrees and the time is dependent on the tea. Green tea taste follows a bell shaped curve, there is a small window of about 10 seconds when the brew is best, you got to stop it precisely at the top. You can use a thermometer and a watch, but the easiest is to just take a sip of the brew every 30 seconds. Black teas, oolong and puerh can handle 100 degree water and are not as fussy about timing.
- mattowen_uk 5y agoY'know what...? Make the tea in a way that you like to drink it. It's so simple, I can't believe all these comments arguing over something so subjective.