Orange Pekoe is often referred to as "OP"; the grading scheme contains several other categories considered to be of higher quality than OP, which are determined primarily by leaf wholeness and leaf size.
Orange Pekoe is often referred to as "OP". The grading scheme contains several other categories. These several other categories are considered to be of higher quality than OP. Higher quality than OP are determined primarily by leaf wholeness. Higher quality than OP are determined primarily by leaf size.