What happens when you put red cabbage in cola?

When you put red cabbage in cola, the anthocyanins in the cabbage, which are responsible for its purple color, react with the acidity and sugars in the cola. This reaction can cause a color change, often resulting in a bluish or reddish hue. The acidity of the cola can also lead to the release of pigments from the cabbage, enhancing the color change. Overall, it creates an interesting visual effect due to the interaction between the natural pigments and the cola.