As mentioned in the recipe, use organic potatoes and beetroots so that the peels are free from chemicals/pesticides
Use peels of carrots, beetroots, potato, sweet potato, turnips, parsnips etc, anything you like
Ensure to wash the peels thoroughly so that no grit or mud is nestled in them
Sprinkle pepper powder or chilli powder or chaat masala if desired or serve with a dip if you fancy :)