What do the letter grades on Ceylon black tea describe?
The letters on Ceylon black tea describe leaf shape and particle size, not flavor quality. OP (Orange Pekoe) covers slender, straight leaves about 7 to 11 millimeters long with visible bud tips. BOP (Broken Orange Pekoe) is cut into 2 to 3 millimeter pieces. BOPF (Broken Orange Pekoe Fannings) runs about 1 to 2 millimeters and brews a darker cup, while D (Dust) is the finest sifted fragment.
The same logic used to describe coffee applies here: grade and taste are separate questions. A higher letter grade does not automatically mean better flavor, and BOP has no single global standard, so results vary by region and picking season. OP and BOP also differ in processing, since BOP comes from crushing OP leaves under high pressure. Dust and CTC material typically go into tea bags.
When selecting Ceylon black tea, you will often see designations such as OP, BOP, BOPF, and D. What exactly do they represent? Does a higher grade mean better quality? In fact, these letter combinations mainly describe the shape and particle size of the tea leaves, and they do not correspond in a simple way to flavor quality. This article will break down the definitions and characteristics of Orange Pekoe, Broken Orange Pekoe, Broken Orange Pekoe Fannings, Dust black tea, and the CTC process one by one, explaining the differences among grades in raw materials, processing methods, and suitable applications, so that coffee and tea lovers can more clearly understand the logic of black tea grading and make more appropriate judgments when choosing tea bags or loose tea.
1. OP (Orange Pekoe) The "OP" that appears here has nothing to do with the tea plant variety or the taste of the tea liquor. Although it literally includes "orange," the whole term does not refer to citrus aroma. It actually describes the appearance and size of black tea leaves. OP is generally understood as those slender and straight leaves, roughly 7 to 11 millimeters in length, with a surface covered in white down, namely the bud tips. After brewing, the tea liquor can present a light orange color.
2. BOP (Broken Orange Pekoe) BOP is generally regarded as small 2 to 3 millimeter pieces formed after OP-grade leaves are cut. Compared with other leaf forms, the finished broken leaves often retain the largest number of tender buds. However, there is no unified global standard for the BOP grade, and differences may occur depending on conditions such as the production region and picking season. The processing methods for OP tea and BOP tea are not the same; the latter is obtained by crushing OP leaves under high pressure.
3. BOPF (Broken Orange Pekoe Fannings) Fannings (F) are smaller than BOP tea and belong to broken leaves, about the size of a needle tip, roughly 1 to 2 millimeters. The tea liquor brewed from BOPF is darker in color and is usually used to make black tea bags.
4. D (Dust black tea) Dust (D) may refer either to the lowest-grade tea produced by the CTC method or to powdered tea obtained through orthodox processing. Tea of this size consists of the finest fragments left after sifting and is sometimes also called "gold dust." It is generally used only for making tea bags.
5. CTC tea The CTC (crush, tear, curl) method is very popular because of its efficiency and convenience. Tea processed by CTC can be either hand-picked or machine-harvested. When machine harvesting is used, the CTC process collects the traditionally required top two leaves and bud together with other leaves from the tea plant. The leaves are then processed through a CTC machine, and the finished product always comes out in broken sizes.
The above content is compiled by CoffeeHunters, a coffee news website.
