The signage of Delhi restaurants used to be fairly uniform. Mughlai-Chinese-Continental, it said stolidly, as if daring you to find a food category that didn&rsquot fit into these. And indeed, chicken, the capital&rsquos favourite bird, was available in all three culinary avatars, represented by tomato-butter gravy, chilli-garlic sauce and a white béchamel &lsquobake&rsquo, respectively. Variations were few and far between, and generally short-lived. Even restaurants like Ritu Dalmia&rsquos Mezzaluna came, saw and died it just wasn&rsquot time yet. In the 1990s, that was just how the kukkad crumbled.