Meet gastronomic inventor Risha Jasmine Nathan

• Risha Jasmine Nathan, 34, using fruit and vegetable peel to remove heavy metals from drinking water. Her pathbreaking work recently landed her on the 50 Next list of gastronomic gamechangers, in the science innovators category. The list, put together by the 50 Best organisation, names those who have made great impact in the culinary space. See how she went about bringing her bright idea to fruition.