Broken grade describes a category of orthodox tea in which the manufactured leaf has been intentionally cut or broken into smaller pieces during processing — as opposed to whole-leaf grades (FOP, OP, etc.) where intact leaf roll is preserved. The most common broken grade is BOP (Broken Orange Pekoe), followed by BOPF (Broken Orange Pekoe Fannings), GBOP (Golden Broken Orange Pekoe), TGBOP (Tippy Golden Broken Orange Pekoe), and others. Broken grades extract faster, produce stronger colour, and are the primary grades used in tea blending and tea bag production.
Also known as: broken leaf, BOP grades, broken orthodox
In-Depth Explanation
How broken grades are produced:
During orthodox tea manufacture, the withered, rolled, oxidised, and dried leaf is passed through sieves and rollers that both sort leaf by size and further break larger whole-leaf pieces into smaller fragments. The resulting size hierarchy:
| Grade category | Typical particle size | Extract speed |
|---|---|---|
| Whole leaf (FOP, OP, etc.) | Intact twisted roll | Slow |
| Broken (BOP, GBOP, TGBOP) | Medium-small fragments | Medium-fast |
| Fannings (OF, BOPF) | Fine, flat particles | Fast |
| Dust | Very fine; near-powder | Very fast |
Why broken grades exist commercially:
1. Faster extraction: Smaller particles have much higher surface area per unit weight. A BOP brews fully in 3–5 minutes; a whole-leaf FOP may take 5–7+ minutes to fully develop. This speed suits commercial production and the demands of retail consumers who want quick, strong tea.
2. Stronger colour: Broken grades produce darker, more intensely coloured liquor per gram of leaf — a commercial quality parameter, particularly for blending and tea bag products where visual colour in the cup is valued.
3. Blending stock: Commercial tea blends (Breakfast teas, English blends) are predominantly BOP-based because broken grades blend consistently and produce uniform results across different constituent origins.
4. Tea bag compatibility: Tea bags require relatively fine particle size to extract quickly through the bag material. BOP and BOPF are the workhorses of the tea bag industry; dust is used for some bags.
Broken grade and quality:
Broken grade does not automatically indicate lower quality than whole-leaf — a BOP from a premium estate may be excellent, producing a strong, brisk, pungent cup. However, the physical form of broken grade makes it less suitable for:
- Gongfu or grandpa-style brewing where repeated light infusions are desired
- Appreciation of leaf appearance during and after brewing
- Evaluation of pluck quality via infused leaf assessment
Common Misconceptions
“Broken grade = low-quality tea.”
The word “broken” suggests damage or inferiority, but broken grades are intentionally produced and commercially important. Quality broken grades from good estates can be superb for their intended purpose — strong, quick, commercially versatile.
“CTC and broken grade are the same.”
CTC (Cut-Tear-Curl) is a different manufacturing process that uses dedicated rolling machinery to produce small, round pellets. Broken grade is produced within the orthodox manufacturing process by sieving and breaking. Both produce small-particle tea for fast extraction, but they are distinct processes with different flavour outcomes.
Social Media Sentiment
- r/tea: Broken grade is discussed in the context of tea bag quality — why tea bags often taste “stronger but flat” compared to whole-leaf, and how BOP from quality estates differs from the commodity dust used in mass-market bags.
- Tea communities: Many enthusiasts start with BOP (often in tea bags) and transition to whole-leaf — the comparison between high-quality BOP and whole-leaf FOP from the same estate is a popular educational exercise.
Last updated: 2026-05
Related Terms
Research
- Harler, C.R. (1963). Tea Manufacture. Oxford University Press.
Summary: Describes the production of broken grades within orthodox tea manufacture, explaining the mechanical processes that produce BOP and related grades and their commercial applications in blending and tea bag production.
- Ukers, W.H. (1935). All About Tea (Vols. 1–2). The Tea and Coffee Trade Journal Company.
Summary: Documents the historical development of the broken grade system within the British-Indian tea trade, including the commercial rationale for broken grades and their role as the primary grades in the growing tea bag and mass-market blending trade of the early twentieth century.