Why am I getting black residue from the kadai every time I wipe it. I tried to boil water water and throw it several times. I tries coating it with oil and heat it. But even after doing that when I wipe the kadai with white paper towel or cloth I see black residue. Is there I can do something to get rid of the black residue?
Wash it again, wipe it dry and apply a coating of cooking oil and gently wash with soap and water again. The kadhai should not be ready to use.