Discover the chemistry behind one of nature’s most colorful ingredients in the latest episode of Chemists in the Kitchen. Using butterfly pea flowers to create vibrant cocktails, our chemists investigate the natural pigments called anthocyanins and reveal why a splash of lemon juice can transform a deep blue drink into brilliant shades of purple and pink. Along the way, they compare butterfly pea flowers with red cabbage and demonstrate how changes in pH alter the way these pigments interact with light.

From brewing a simple syrup to experimenting with acidic and basic ingredients, this episode brings together chemistry, cooking, and a little bit of mixology to uncover the science behind every color change. Whether you’re a chemistry enthusiast or simply curious about the science behind everyday foods and drinks, you’ll never look at a colorful beverage the same way again.