The red may come from a tiny insect

In some strawberry yogurts and red candies, the vivid color comes from carmine, a red dye made from cochineal insects. The insects feed on cactus plants; after they are harvested and processed, their color-producing compounds can be extracted and used as a food coloring.

That may sound surprising because the finished dye looks nothing like an insect. Processing separates and concentrates the pigment, which can then be blended into food to produce a strong red or pink shade.

Why use it—and how to spot it

Carmine gives manufacturers a stable, vivid color, but it is only one option. Other products use plant-based colors, such as beet-derived pigments, or synthetic dyes. So a bright red strawberry yogurt or candy does not by itself reveal which coloring was used.

Check the ingredient list: carmine may appear as “carmine” or “cochineal extract.” The label turns the apparent mystery into a specific choice of coloring—and a reminder that a familiar food color can have an unexpected source.