请输入您要查询的百科知识:

 

词条 Tea leaf grading
释义

  1. General classifications

     Orange pekoe  Etymology  Fannings 

  2. Grades

     Whole leaf grades  Broken leaf grades  Fannings grades  Dust grades  Other terms 

  3. See also

  4. Notes

  5. References

{{Redirect|Orange Pekoe|the Japanese jazz band|Orange Pekoe (band)}}{{over-coverage|date=April 2018}}{{unreliable sources|date=April 2018}}

In the tea industry, tea leaf grading is the process of evaluating products based on the quality and condition of the tea leaves themselves.

The highest grades for Western and South Asian teas are referred to as "orange pekoe", and the lowest as "fannings" or "dust". Pekoe tea grades are classified into various qualities, each determined by how many of the adjacent young leaves (two, one, or none) were picked along with the leaf buds. Top-quality pekoe grades consist of only the leaf buds, which are picked using the balls of the fingertips. Fingernails and mechanical tools are not used to avoid bruising.

When crushed to make bagged teas, the tea is referred to as "broken", as in "broken orange pekoe" ("BOP"). These lower grades include fannings and dust, which are tiny remnants created in the sorting and crushing processes.

Orange pekoe is referred to as "OP". The grading scheme also contains categories higher than OP, which are determined primarily by leaf wholeness and size.[1][1]

Broken, fannings and dust orthodox teas have slightly different grades. CTC teas, which consist of leaves mechanically rendered to uniform fannings, have yet another grading system.

General classifications

Orange pekoe

Orange pekoe ({{IPAc-en|ˈ|p|ɛ|k|oʊ|,_|ˈ|p|iː|k|oʊ}}), also spelled pecco, or OP is a term used in the Western tea trade to describe a particular genre of black teas (orange pekoe grading).[2][3] Despite a purported Chinese origin, these grading terms are typically used for teas from Sri Lanka, India and countries other than China; they are not generally known within Chinese-speaking countries. The grading system is based upon the size of processed and dried black tea leaves.

The tea industry uses the term orange pekoe to describe a basic, medium-grade black tea consisting of many whole tea leaves of a specific size;[2] however, it is popular in some regions (such as North America) to use the term as a description of any generic black tea (though it is often described to the consumer as a specific variety of black tea).[4][5] Within this system, the teas that receive the highest grades are obtained from new flushes (pickings).[6] This includes the terminal leaf bud along with a few of the youngest leaves. Grading is based on the "size" of the individual leaves and flushes, which is determined by their ability to fall through the screens of special meshes[7] ranging from 8–30 mesh.[8] This also determines the "wholeness", or level of breakage, of each leaf, which is also part of the grading system. Although these are not the only factors used to determine quality, the size and wholeness of the leaves will have the greatest influence on the taste, clarity, and brewing time of the tea.[9]

When used outside the context of black-tea grading, the term "pekoe" (or, occasionally, orange pekoe) describes the unopened terminal leaf bud (tips) in tea flushes. As such, the phrases "a bud and a leaf" or "a bud and two leaves" are used to describe the "leafiness" of a flush; they are also used interchangeably with pekoe and a leaf or pekoe and two leaves.[10]

Etymology

The origin of the word "pekoe" is uncertain. One explanation is that it is derived from the transliterated mispronunciation of the Amoy (Xiamen) dialect word for a Chinese tea known as "white down/hair" (白毫; {{zh|poj=pe̍h-ho}}).[11] This is how "pekoe" is listed by Rev. Robert Morrison (1782–1834) in his Chinese dictionary (1819) as one of the seven sorts of black tea "commonly known by Europeans".[12] This refers to the down-like white "hairs" on the leaf and also to the youngest leaf buds. Another hypothesis is that the term derives from the Chinese báihuā "white flower" ({{zh|c=白花|p=báihuā|poj=pe̍h-hoe}}), and refers to the bud content of pekoe tea.

Sir Thomas Lipton, the 19th-century British tea magnate, is widely credited with popularizing, if not inventing, the term "orange pekoe", which seems to have no Chinese precedent, for Western markets. The "orange" in orange pekoe is sometimes mistaken to mean the tea has been flavoured with orange, orange oils, or is otherwise associated with oranges. However, the word "orange" is unrelated to the tea's flavor.[2] There are two explanations for its meaning, though neither is definitive:

  1. The Dutch House of Orange-Nassau, now the royal family, was already the most respected aristocratic family in the days of the Dutch Republic, and came to control the de facto head of state position (Stadtholder) of Holland and Zealand. The Dutch East India Company played a central role in bringing tea to Europe and may have marketed the tea as "orange" to suggest association with the House of Orange.&91;11&93;
  2. Colour: the copper colour of a high-quality, oxidized leaf before drying, or the final bright orange colour of the dried pekoes in the finished tea may be related to the name.&91;13&93; These usually consist of one leaf bud and two leaves covered in fine, downy hair. The orange colour appears when the tea is fully oxidized.

Fannings

Fannings are small pieces of tea that are left over after higher grades of teas are gathered to be sold. Traditionally these were treated as the rejects of the manufacturing process in making high-quality leaf tea like the orange pekoe. Fannings with extremely small particles are sometimes called dusts.[14] Fannings and dusts are considered the lowest grades of tea, separated from broken-leaf teas which have larger pieces of the leaves. However, the fannings of expensive teas can still be more expensive and more flavourful than whole leaves of cheaper teas.

This traditionally low-quality tea has, however, experienced a huge demand in the developing world in the last century as the practice of tea drinking became popular. Tea stalls in India and the South Asian sub-continent and Africa prefer dust tea because it is cheap and also produces a very strong brew; consequently, more cups are obtained per measure of tea dust.

Because of the small size of the particles, a tea infuser is typically used to brew fannings.[15] Fannings are also typically used in most tea bags, although some companies sell tea bags containing whole-leaf tea.[16]

Some exporters focus primarily on broken-leaf teas, fannings, and dusts.[14]

Grades

Choppy contains many leaves of various sizes. Fannings are small particles of tea leaves used almost exclusively in tea bags. Flowery consists of large leaves, typically plucked in the second or third flush with an abundance of tips. Golden flowery includes very young tips or buds (usually golden in colour) that were picked early in the season. Tippy includes an abundance of tips.[17]

Whole leaf grades

Grade Description
OP
Orange Pekoe

Main grade, consisting of long wiry leaf without tips.

OP1

More delicate than OP; long, wiry leaf with a light liquor.

OPA

Bolder than OP; long leaf tea which ranges from tightly wound to almost open.

OPS
Orange Pekoe Superior

Primarily from Indonesia; similar to OP.

FOP
Flowery Orange Pekoe

High-quality tea with a long leaf and few tips, considered the second grade in Assam, Dooars, and Bangladesh teas, but the first grade in China.

FOP1

Limited to only the highest quality leaves in the FOP classification.

GFOP
Golden Flowery Orange Pekoe

Higher proportion of tip than FOP. Top grade in the Milima and Marinyn regions, but uncommon in Assam and Darjeeling.

TGFOP
Tippy Golden Flowery Orange Pekoe

The highest proportion of tip, and the main grade in Darjeeling and Assam.

TGFOP1

Limited to only the highest quality leaves in the TGFOP classification.

Also used facetiously among tea aficionados to mean "Far Too Good for Ordinary People".}}
Finest Tippy Golden Flowery Orange Pekoe

Highest quality grade.

FTGFOP1
STGFOP
SFTGFOP

Limited to only the highest quality leaves in the FTGFOP classification.

Broken leaf grades

Grade Description
BT
Broken Tea

Usually a black, open, fleshy leaf that is very bulky. This classification is used in Sumatra, Ceylon (Sri Lanka), and some parts of Southern India.

BP
Broken Pekoe

The most common broken pekoe grade; from Indonesia, Ceylon (Sri Lanka), Assam and Southern India.

BPS
Broken Pekoe Souchong

Term for broken pekoe in the Assam and Darjeeling regions.

FP
Flowery Pekoe

High-quality pekoe. Usually coarser with a fleshier, broken leaf. Produced in Ceylon (Sri Lanka) and Southern India, as well as in some parts of Kenya.

BOP
Broken Orange Pekoe

Main broken grade. Prevalent in Assam, Ceylon (Sri Lanka), Southern India, Java, and China.

F BOP
Flowery Broken Orange Pekoe

Coarser and broken with some tips. From Assam, Ceylon (Sri Lanka), Indonesia, China, and Bangladesh. In South America, coarser, black broken.{{clarify|date=June 2018}}

F BOP F
Finest Broken Orange Pekoe Flowery

The finest broken orange pekoe, with a higher proportion of tips; mainly from Ceylon's "low districts".

G BOP
Golden Broken Orange Pekoe

Second grade tea with uneven leaves and few tips.

GF BOP1
Golden Flowery Broken Orange Pekoe 1

As above, but with only the highest quality leaves in the GFBOP classification.

TGF BOP1
Tippy Golden Flowery Broken Orange Pekoe 1

High-quality leaves with a high proportion of tips; finest broken First Grade Leaves in Darjeeling and some parts of Assam.

Fannings grades

Grade Description
PF
Pekoe Fannings
OF
Orange Fannings

From northern India and some parts of Africa and South America.

FOF
Flowery Orange Fannings

Common in Assam, Dooars, and Bangladesh. Some leaf sizes come close to the smaller broken grades.

GFOF
Golden Flowery Orange Fannings

Finest grade in Darjeeling for tea bag production.

TGFOF
Tippy Golden Flowery Orange Fannings
BOPF
Broken Orange Pekoe Fannings

Main grade in Sri Lanka, Indonesia, Southern India, Kenya, Mozambique, Bangladesh, and China. Black-leaf tea with few added ingredients, uniform particle size, and no tips.

Dust grades

Grade Description
D1
Dust 1

From Sri Lanka, Indonesia, China, Africa, South America, Southern India, and Bangladesh.

PD
Pekoe Dust
PD1
Pekoe Dust 1

Mainly produced in India.

Other terms

  • Musc. – Muscatel
  • Cl. – Clonal
  • Ch. – China varietal
  • Qu. – Queen jat
  • FBOPF Ex. Spl. – Finest Broken Orange Pekoe Flowery (Extra Special)
  • FP – Flowery Pekoe
  • PS – Pekoe Souchong
  • S – Souchong
  • BOF – Broken Orange Fannings
  • BPF – Broken Pekoe Fannings
  • RD – Pekoe Dust / Red Dust
  • FD – Fine Dust
  • GD – Golden Dust
  • SRD – Super Red Dust
  • SFD – Super Fine Dust
  • BMF – Broken Mixed Fannings

See also

{{portal|Tea|Agriculture|Drink}}
  • Food grading
  • ISO 3103, a standardized method of tea brewing used to compare tea leaf flavor and aroma characteristics
  • Maofeng, an equivalent tea term in China
  • Tea blending and additives

Notes

{{notelist}}

References

1. ^{{cite web | author=TeaFountain |accessdate=2006-12-12 | year=2004 | title=Tea Leaf Grades & Production Methods | url=http://www.teafountain.com/teagrades/ | work=TeaStation & TeaFountain | archiveurl = https://web.archive.org/web/20060902002712/http://www.teafountain.com/teagrades/ | archivedate = 2006-09-02}}
2. ^{{cite web | author= | accessdate=2006-12-12 | title=Stash Orange Pekoe Tea | work=Stash Tea | url=http://www.stashtea.com/w-050420.htm | archiveurl=https://web.archive.org/web/20061112025317/http://www.stashtea.com/w-050420.htm | archivedate=2006-11-12}}
3. ^{{cite web | author=Swann's Classic Teas | accessdate=2006-12-12 | date= | title=The Leaf is All: Leaf Grading | url=http://www.swannteas.com/abouttea3.html | archiveurl= https://web.archive.org/web/20060819044001/http://www.swannteas.com/abouttea3.html | archivedate=2006-08-19 | work=Swann's Classic Teas}}
4. ^{{cite web |author = Peet's Coffee |accessdate = 2006-12-12 |year = 2006 |title = Learn: Tea Grades |url = http://www.peets.com/learn/tea_grades.asp?sid=E5943581825A7026341FDFF28EDAE5EB |archive-url = https://archive.is/20130131050648/http://www.peets.com/learn/tea_grades.asp?sid=E5943581825A7026341FDFF28EDAE5EB |dead-url = yes |archive-date = 2013-01-31 |work = Peet's Coffee & Teas}}
5. ^{{cite web |author=Barnes & Watson Fine Teas | accessdate=2006-12-12 | year=2006 | title=Leaf Grades | url=http://barnesandwatson.com/Tea-Education/c3/p17/Leaf-Grades/pages.html | work= Barnes & Watson Fine Teas | archiveurl = https://web.archive.org/web/20070124012353/http://barnesandwatson.com/Tea-Education/c3/p17/Leaf-Grades/pages.html | archivedate = 2007-01-24}}
6. ^{{cite web|url=http://www.houseoftea.ie/tea-grades|title= Tea grades|work=Tea grades|publisher=House of Tea|accessdate=14 November 2012}}
7. ^{{cite web |author=Marian Segal |accessdate=2006-12-12 |date=March 1996| title=Tea: A Story of Serendipity | url=http://permanent.access.gpo.gov/lps1609/www.fda.gov/fdac/features/296_tea.html | work=FDA Consumer magazine }}
8. ^{{cite |author=Campbell Ronald Harlers |year=1973| title="Tea Production" |edition=15| encyclopedia = The New Encyclopædia Britannica 1973 |volume=18 | publisher = Encyclopædia Britannica Inc.}}
9. ^{{cite web |author=Olde Wyndham Tea Company |accessdate=2006-12-12 |year=2002| title=Grades of Gourmet Tea | url=http://www.oldewyndhamteacompany.com/grades.html | archiveurl=https://web.archive.org/web/20061209173601/http://www.oldewyndhamteacompany.com/grades.html | archivedate=2006-12-09 | work=Olde Wyndham Tea Company }}
10. ^{{cite web |author= AFD (Appui à la Formation et au Développement) |accessdate= 2006-12-12 |date= |title= Les techniques d'exploitation – Cueillette – Normes de cueillette |url= http://www.afd-lv.org/plant-ch/theier/techniqu/NCthe.htm |work= Théier (Camellia sinensis) |deadurl= yes |archiveurl= https://web.archive.org/web/20070929094002/http://www.afd-lv.org/plant-ch/theier/techniqu/NCthe.htm |archivedate= 2007-09-29 |df= }}
11. ^{{cite web | author=James Norwood Pratt | accessdate=2006-12-12 |date=May 2002 | title=The Dutch Invent "Orange Pekoe" | url=http://www.teamuse.com/article_020501.html | work=TeaMuse Monthly Newsletter}}
12. ^Rev. Robert Morrison, [https://archive.org/details/p2dictionaryofch01morruoft A dictionary of the Chinese language, vol. 1, pt. 2], pp. 3-4. Quote: "The sorts commonly known to Europeans are these, ... ; 4th, Pekoe, 白毫, Pih-haou; ...". The same text is reproduced in the [https://archive.org/details/dictionaryofchin00morr 1865 reprint].
13. ^{{cite web |author=Gillards of Bath |accessdate=2006-12-12 |year=2006| title=Dargeeling teas | url=http://www.gillards.co.uk/Tea_List.html | work= Gillards of Bath |archiveurl = https://web.archive.org/web/20070111164837/http://www.gillards.co.uk/Tea_List.html |archivedate = 2007-01-11}}
14. ^"Good liquoring CTCs see demand at Kolkata tea sale", Sify, Jul. 21, 2008.
15. ^[https://www.nytimes.com/1943/02/19/archives/tea-balls-for-conservation.html Felix Cooper, "Tea Balls for Conservation", New York Times, Feb. 19, 1943.]
16. ^[https://www.nytimes.com/2000/02/09/dining/food-stuff.html Florence Fabricant, "Whole Leaves, No Strings For a New Tea Bag", New York Times, Feb. 9, 2000.]
17. ^The Tea House Times, GRADING TERMINOLOGY FOR TEA LEAVES
General
  • {{cite web|url=http://www.plain-t.com/tea_production.htm|title=Tea & Production|publisher=Plain T|accessdate=2006-11-15}}
{{commons category|Orange Pekoe}}{{Teas}}

1 : Black tea

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/9/30 22:20:37