Freedom at Midnight casting director says his criteria were resemblance and English-speaking skills as he roped in actors to play Gandhi, Nehru and Sardar Patel

The Indian fabric popularised by Mahatma Gandhi during the freedom struggle is sold through various channels today, but all that is marketed as khadi is not necessarily authentic. Ahead of Independence Day, experts explain why the true essence of the cloth has diminished and suggest ways to bring it back