Tea grading is based on the size of the leaf and types of leaves included in the tea. Though leaf size is an important quality factor, it is not, by itself, a guarantee of quality
Grading systems and terminology vary with tea type an d country.
Generally, the more whole the leaf is and the more buds it contains, the higher the grade of tea.
Teas are often designated as OP or FOP. These designations are part of the grading system used for whole leaf black teas and refer to the leaf size and amount of tip in the tea
Pekoe means teas picked as 2 leaves and a bud.
OP, or Orange Pekoe, is a full-leaf tea with no tip or buds.
FOP, orFlowery Orange Pekoe, is a longer leaf than anOPand has some buds.
India uses the following grades for Black Tea.
Terms for Dry Leaf
Black – a desirable characteristic for Orthodox tea leaf appearance. Bold – Pieces of leaf that are too big for a grade. Chesty – Taint caused by unseasoned chest panels. Clean – Free of stalk/fibre. Fibre – Shreds of stalk in CTC grades- indicating bad plucking. Golden Tip/Tippy – Desirable feature in Orthodox Teas, indicating presence of pubescent buds. Grainy – Hard cut CTC leaf Stalky – Indicating undue presence of stalk. The result of coarse plucking
Stylish – Leaves which are wiry, neatly twisted and evenly size