Now that the U.S. Food and Drug Administration (FDA) has announced a ban on red dye No.3, it’s fair to wonder about dyes in your food. Several companies have moved toward using natural dyes in ...

This is an extract from the leaves of Uncaria gambir, a native plant in heavy demand from the middle of the 17th century as a tanning agent and dye. The forests of the Riau Archipelago were ...