CTC Tea Grades Guide | BP, BOP, PF, OF, Dust Breakdown
In the Crush, Tear, Curl (CTC) manufacturing process, withered green tea leaf is cut and rolled through pairs of high-speed serrated rollers into dense, spherical granules. After fermentation and hot-air firing, the black tea is mechanically sorted through vibrating multi-deck sifter screens into distinct commercial grades. In the tea trade, grade denotes particle size rather than intrinsic leaf quality. This technical guide explains the particle dimensions, infusion kinetics, and commercial blending roles of standard Indian CTC grades.
CTC Grade Hierarchy at a Glance
- • Brokens (Bold Granules): Broken Pekoe (BP), Broken Orange Pekoe (BOP).
- • Fannings (Medium Granules): Pekoe Fannings (PF), Orange Fannings (OF).
- • Dusts (Fine Micro-Granules): Pekoe Dust (PD), Dust (D), Churamoni Dust (CD).
- • Secondary Marks: BP1, PF1, D1 (sifted secondary cuts with value pricing).
- • Selection Principle: No grade is universally superior; choice depends on extraction speed, strength, and blend formulation.
How CTC Grading Informs Commercial Blending
CTC grades are classified primarily by mechanical particle sizing. Understanding extraction kinetics allows blenders to engineer balanced formulations for specific brewing customs.
Particle Size vs Extraction Speed
Smaller particles have a dramatically higher ratio of surface area to mass. Finer fannings and dust grades release theaflavins and tannins almost instantaneously when hot water is applied, whereas bold brokens extract more gradually, yielding longer flavor stability in consumer teapots.
Bulk Density & Pack Sizing
Bulk density varies with tea grade, particle size, moisture and packing configuration. Dust and fine fannings pack more compactly than bold BP granules. Commercial packaging facilities account for these density variations to achieve uniform fill weights and package volumes across production runs.
Primary vs Secondary Marks
During factory sorting, primary cuts represent the cleanest, most uniform sieve fractions. Secondary grades (such as BP1 or PF1) contain slightly more fiber or mixed sizing, offering cost advantages for price-sensitive commercial blends without compromising cup coloration.
The Commercial CTC Grading Matrix
Comparison of particle characteristics, liquor extraction behavior, and standard commercial applications across standard Indian CTC grades. Actual particle and sieve specifications can vary by grading practice, lot and buyer specification.
| Grade Code | Full Grade Name | Relative Particle Size | Liquor & Extraction Character | Typical Commercial Use |
|---|---|---|---|---|
| BP | Broken Pekoe | Bold, dense granules | Gradual extraction, rich malty body, prolonged cup stability, deep reddish tint | Premium loose retail pouches, consumer tea caddies, morning breakfast blends |
| BOP | Broken Orange Pekoe | Medium-large granules | Balanced infusion rate, brisk astringency, bright coppery liquor | Commercial household blends, food-service cafeteria tea, hospitality packs |
| PF | Pekoe Fannings | Medium-fine granules | Rapid extraction (45–60 sec), deep coppery-red color, brisk pungent cup | Fast-brewing retail cartons, Karak Chai, commercial masala chai blends |
| OF | Orange Fannings | Fine granules | Very fast extraction, dark reddish-brown infusion, sharp astringent bite | High-yield catering tea, commercial beverage service, quick milk chai |
| PD | Pekoe Dust | Micro-granular cut | Near-instantaneous dark extraction, high tannin release, strong pungency | Heavy milk chai, street stall chai service, economical strong blends |
| D / CD | Dust / Churamoni Dust | Ultra-fine particles | Instantaneous liquor color, dense opaque cup, maximum astringency | Traditional high-strength boiled milk tea, low-cost commercial chai |
Frequently Asked Questions: CTC Tea Grades
What does CTC stand for in tea processing?
CTC stands for Crush, Tear, Curl. It refers to a mechanical processing method where withered green tea leaf is passed through pairs of counter-rotating cylindrical rollers engraved with interlocking serrations. The rollers macerate the leaf tissue into dense, uniform granules before controlled oxidation and hot-air firing.
What is the primary difference between Broken Pekoe (BP) and Pekoe Fannings (PF)?
Broken Pekoe (BP) represents a larger, bolder granular cut that yields a deep liquor with rounded body, excellent cup stability, and slower extraction. Pekoe Fannings (PF) consists of smaller granules with greater surface area per unit weight, yielding rapid liquor extraction, sharp briskness, and intense dark coppery color within 45 to 60 seconds.
Is Dust grade inferior in quality compared to bolder CTC grades?
No. In commercial tea evaluation, grade refers to particle size rather than intrinsic leaf quality. Primary tea dusts (such as PD and Dust 1) are clean micro-granules separated during mechanical sorting. Because of their minute particle size, dust grades deliver instantaneous, dark, highly astringent liquor, making them essential for high-strength milk chai and fast-service catering.
How does a commercial buyer select the right CTC grade for a blend?
Grade selection depends on the target product objective: bolder brokens (BP, BOP) are favored for loose consumer retail packets due to visual appeal and infusion control; fannings (PF, OF) are chosen for fast extraction and rich color; and fine dusts (PD, D) are selected for rapid, maximum-strength brewing with milk and sugar.
Sourcing Commercial CTC Grades from India
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