How do you make a eggplant indicator?

To make an eggplant indicator, you can use a simple process involving an eggplant and a pH indicator solution. First, cut the eggplant into small pieces and blend it with water to extract its natural pigments. Strain the mixture to obtain a liquid that can serve as a pH indicator. This natural indicator will change color depending on the acidity or alkalinity of the solution it is mixed with, typically turning purple in neutral solutions and shifting to shades of pink or green in acidic or basic solutions, respectively.