Why is blue dye in marshmallows?
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4 min read
According to manufacturers and food science experts, many marshmallows contain a tiny amount of blue dye to make them appear whiter. While it seems counterintuitive to add a dark color to a white food, this is a classic optical trick of color theory used by food producers and even home bakers. The small amount of blue cancels out the natural yellowish tint from ingredients like vanilla and gelatin, resulting in a brighter, more appealing final product.
