Tea Grading

Tea grading is the post-processing classification of tea leaves by size, appearance, and structural integrity — producing standardized grade codes that communicate product specifications in the commercial tea trade. Grading conventions differ significantly by region: India and Sri Lanka use letter-code systems derived from British colonial administration; China uses descriptive and number-based grades; Japan uses harvest timing and handling quality criteria.

In-Depth Explanation

Why grading matters:

After tea is processed and dried, sorting separates leaves by particle size and condition. Different-sized pieces brew differently:

• Smaller particles have more surface area → faster, stronger, more immediate extraction
• Whole leaves have less surface area → slower, more complex, multiple-infusion capable
• Broken and damaged leaf extracts faster than whole leaf

Grading communicates this to buyers — enabling commercial contracts to specify consistent product specifications for blending, packaging, and retail.

The Indian/Ceylon Orthodox Grading System:

The most complex grading vocabulary applies to Darjeeling, Assam, and Ceylon orthodox black teas:

Flowery Pekoe grade names derive originally from “pekoe” — a corruption of the Chinese Amoy dialect pek-ho (白毫, báiháo), meaning “white hair/down,” referring to the silvery tip on young buds.

The letters stack: FTGFOP = Finest Tippy Golden Flowery Orange Pekoe. “1” at the end denotes the top lot within a grade.

CTC grade codes:

CTC teas have their own grade system:

Chinese grading:

China uses a less standardized system, with different conventions per tea type:

• Number grades: Longjing Grade 1–5; Keemun Grade 1–7
• Name grades: Some high-grade Chinese teas use names (Emperor Grade, Extra Special, etc.)
• Special designation: Ming Qian (before Qingming) and Yu Qian (before Grain Rain) indicate harvest timing as a quality marker for spring greens

Japanese grading:

Japan typically uses:

• Gyokuro → Super Premium / Premium / Standard within the shade-grown category
• Sencha → Extra to Standard, often labeled by region and flush
• Market-specific tier branding (e.g., shincha = first harvest premium designation)

History

The Indian/Ceylon letter-grade system developed under British colonial tea administration in the 19th century to standardize trade records and auction catalog descriptions at the Calcutta and Colombo tea auctions. The vocabulary borrowed the Chinese term pekoe but the grade hierarchy was a British commercial invention. The system is now maintained by the Tea Board of India and the Sri Lanka Tea Board.

Common Misconceptions

“SFTGFOP1 is always the best tea.” Grade codes describe the leaf appearance and grade, not the quality of the tea’s flavor. An SFTGFOP1 from a mediocre estate may taste inferior to a BOP from an exceptional one. Grade is a structural/appearance descriptor used in trade; sensory quality is assessed separately.

Related Terms

• Sorting-Grading
• CTC Processing
• Darjeeling Tea
• Loose-Leaf Tea

See Also

• Sorting-Grading — the physical sorting process that produces graded categories
• CTC Processing — the production method with its own CTC-specific grade system

Research

• Weisburger, J.H. (1997). “Tea and health: the underlying mechanisms.” Proceedings of the Society for Experimental Biology and Medicine, 220, 271–275. Referenced the relationship between leaf grade, polyphenol concentration, and health properties in different tea grades.
• Harler, C.R. (1963). The Culture and Marketing of Tea (3rd ed.). Oxford University Press. The foundational reference on the development and meaning of the Indian/Ceylon tea grading nomenclature system.