What is tartrazine yellow? Tartrazine is a synthetic yellow food dye and is made from petroleum products. This synthetic color is added to make foods and, of course, drinks look more appealing.

Physician and journalist Bruce Y. Lee explains that the process starts with tartrazine, aka Yellow Dye. No. 5. It's a food dye that's used in many products, including Doritos. But the tartrazine doesn ...