Unlike traditional methods that retain the leaf intact, the CTC method utilizes a series of cylindrical rollers to process the leaf into uniform, granular pellets. With high extraction, CTC Black Tea is ideal for tea bags, milk-based products, and blended teas.
1. What Is CTC Black Tea?
CTC black tea is a type of black tea produced using a highly mechanized processing method designed for efficiency and consistency. The term CTC stands for Crush, Tear, Curl, or Cut, Tear, Curl, describing the mechanical action applied to create small, uniform pellets. This process both saves time in production and creates a product with stronger, bolder, and more consistent flavor.
Unlike orthodox black tea, which emphasizes leaf integrity and gradual flavor development, CTC processing focuses on rapid oxidation and strong extraction. During CTC processing, tea leaves are aggressively processed to maximize surface area and accelerate oxidation. This results in a tea that brews quickly and produces a strong and robust cup.
2. The Production Process of CTC Black Tea
The process of CTC black tea shares some basic steps with orthodox black tea, like withering, oxidation, and drying. However, the intensity and objectives of each phase differ significantly.
Harvesting
While orthodox black tea only uses buds and 2-3 young leaves, CTC types can accommodate a broader range of leaf sizes and maturities. Tea leaves are typically harvested by machine for efficiency, though hand-picking is still used in some regions. The CTC method is less stringent regarding leaf quality compared to traditional processing methods. It can use coarser leaves and harvest more without significantly affecting the strength of the final product.
Withering
Just like Orthodox tea, the process begins by reducing the moisture of the fresh green leaves. The leaves are spread on racks or troughs for 12-18 hours to reduce moisture content by 60-70%. The withering can be accelerated using controlled airflow and temperature in large withering troughs. At this stage, the tea leaves are soft but not broken.
Crushing, tearing, and curling (CTC processing)
This is where the method gets its name. Withered leaves pass through a CTC roller – a series of cylindrical rollers with hundreds of small teeth that crush, tear, and curl the leaves into small, uniform pellets.
- Crush: The rollers crush the leaf, breaking every cell.
- Tear: The sharp “teeth” on the rollers tear the leaf into minute fragments.
- Curl: The centrifugal force and the friction between the rollers curl these fragments into tiny, uniform pellets (granules).
This powerful impact completely breaks down the leaf cells, rapidly releasing enzymes and polyphenols. As a result, oxidation begins almost immediately and occurs faster than with conventional processing methods.
Oxidation
After CTC processing, the tea pellets are spread out and exposed to oxygen under controlled conditions. Because the leaves are so finely shredded, oxidation happens much faster and more intensely than in Orthodox tea. The polyphenols react with oxygen, turning the green pellets into a deep, rich chocolate brown or coppery color. Oxidation also develops the bold, malty, and pungent notes for CTC tea.
Drying
When reaching the desired oxidation level, the tea is dried using hot air to halt enzymatic activity and reduce moisture to 2-3%. Drying stabilizes the tea particles and reduces moisture to safe storage levels. This step also fixes the tea’s final flavor and aroma. Proper drying is essential to maintaining consistency and shelf stability in CTC black tea.
Sorting, grading, and packaging
Finished CTC tea is sorted and graded by pellet size using vibrating mesh screens. CTC black tea is typically classified into grades such as BP, BOP, PF, and dust, each offering different brewing strength and speed. The tea is then packed in PP/PE bags, vacuum bags, or airtight cans for storage or transportation.
3. Key Characteristics of Black Tea CTC
Color and appearance
Unlike the long, twisted leaves of traditional tea, CTC tea has the shape of small, tightly-rolled pellets or granules. The dry tea is usually dark brown to black in color and highly uniform in appearance. When brewed, CTC black tea produces a deep reddish-brown to dark amber liquor within seconds of hitting hot water. The intense color develops rapidly thanks to the fine particle size and ease of extraction.
Flavor and aroma
CTC black tea is known for its strong, bold taste. It often has a brisk and slightly astringent flavor, without the delicate or layered notes found in other black teas.
In terms of aroma, CTC black tea usually has simple, malty, or earthy scents. While it may not be as complex as orthodox black tea, its strength and consistency make it ideal for blending and for enjoying with milk or sweeteners.
Nutritional profile
CTC black tea contains 50-80 mg of caffeine per cup, slightly higher than orthodox black tea due to the increased surface area and rapid extraction. The aggressive processing creates more theaflavins and thearubigins, contributing to its dark color, strong flavor, and astringency. It is naturally calorie-free and delivers a quick, powerful caffeine boost that may support alertness and focus.
4. Typical Black Tea CTC Grades
| Black tea CTC BOP |
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| Black tea CTC BP |
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| Black tea CTC PF1 |
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| Black tea CTC PD |
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