Harvesting saffron requires ... smell, and color make it the most expensive spice in the world. It's used in kitchens across the world, as a fabric and skin dye, and may soon be used more widely ...

Yellow 5 is used in Vigo's saffron ... giving food companies until 2027 to phase out the dye. "The FDA cannot authorize a food additive or color additive if it has been found to cause cancer ...

NOGUCHI: Mark Oliverio sees that preference for color with pickles too. The cauliflower he dyes bright yellow with turmeric sells far better than his vegetable mixed with no dye at all.