Earl Grey Tea and Puer Tea are produced all around the globe. And they change according to region in where they are cultivated. So, the question arises what is Earl Grey Tea and Puer Tea's differentiating factor?In following section we will take a close look at what is Earl Grey Tea and Puer Tea color, serving style, types and much more. First thing to know is what are the different types of Earl Grey Tea and Puer Tea. Well, Earl Grey Tea types include Herbal while types of Puer Tea are Sheng Pu’er (Raw pu-erh Tea) and Shu Pu’er (Ripe pu-erh Tea).