Kung Fu black tea tea pigment mainly includes three major categories of theaflavins ( TFs ), thearubigins ( TRs ) and the tea brown pigment ( TB ). TFs is the main component of black tea soup, and it is also the main ingredient of soup flavor and freshness. It is also the most important substance of “ Golden Circle †, including theaflavins, theaflavins- 3 -gallate, and theaflavins. -3' -gallate, theaflavin digallate. TRs TRs tea is black tea liquor color "red," the main ingredient, is also an important matter Flavored concentration and strength, but not as irritating TFs, the convergence of strong, sweet taste of alcohol. TB is the main reason for the darkness of black tea soup. Instant Fresh Noodles,Bibimbap With Black Truffle Sauce,Spicy Beef Bibimbap,Spicy Crawfish With Shrimp Granules Over Noodle Hunan Jiapin Jiawei Biotechnology Co. , https://www.foxfoodie.com