There are three different types of teas produced- Black Tea, Green Tea and Oolong Tea.
Black Tea with two varieties- The traditional Orthodox (leaf) tea and the modern process of CTC (granular) tea is the most popularly consumed in the world followed by Green Tea and oolong tea.
Tea produced results in four different sieved qualities – Leaf Tea, Broken Tea, Fannings and Dust.
In addition to these descriptions you will find mysterious abbreviations on the packet of a quality tea. These letters have nothing to do with the character or the flavour, but are simply more detailed explanations on the sieving result (leaf grade designation).