Emperor Shah Jahan and his vaunted monument may not have anything to do with a cup of tea, but the &lsquoWah, Taj&rsquo exclamation is certainly due at the emperor&rsquos court for transforming Indian cuisine, at least in the northern plains, to something that eventually evolved into Indian restaurant cuisine around the world. The familiar-now, new-to-them staples of potatoes, tomatoes and chillies, the aphrodisiac silver warq, the mango everywhere, Kashmiri spice vadi, sandalwood, suhaga, and humble white gourd owe their influence to the imperial cooks and royal physician, whose job included menu planning with healthy ingredients&mdashthus notes The Mughal Feast, by Salma Yusuf Husain. This is a transcreation of the Nuskha-e-Shahjahani, an anonymous Persian tome. The &lsquorichness&rsquo of &lsquoIndian&rsquo cuisine the world knows mostly comes from this tradition, where spices were exotic or native novelties, and the original Mughal preference for dried fruits and nuts as well as fresh fruits of a more temperate climate held greater sway&mdashcherries, apricots, grapes and melons. Essentially a cookbook, the book&rsquos slim historical scaffolding is as crucial as the intricately inscribed borders of a Mughal miniature&mdashand the artwork decorating the pages is the non-gustatory garnish.