India didn't know at first because honestly what happened if someone was allergic to the ingredients? Would they have to be magical and not mundane to avoid that? What ingredients are used in magical remedies already? She pondered for a moments time.

What had she learned from the book she read that summer? Basil. Basil might work.

She had been late, instead she decided to follow the new set of tasks and set about preparing her cauldron. Cleaning it out and filling it with water. "Scourgify," she pointed the cauldron glistened. "Aguamenti" and the water began to fill rapidly. There her cauldron was nice and ready for the next step.