New Delhi, Aug. 29 -- Do you have family so fastidious about ensuring the exact taste of favourite foods that they buy ingredients only from preferred sources, and carry essentials on travels? If so, you're not alone. It is almost an Indian custom, a signature culinary method, to insist on such specificities-that local shop's regular supply of dhania-jeera-chilli for those precise measures of heat and flavour; tender tamarind leaves picked at the right seasonal moment, painstakingly transported, and flash-frozen in some far-off freezer to recreate Andhra specialities; rice, of course, and even water for the exact taste of a beloved khichdi. Indian families and communities have always taken great pride in their gastronomical traditions as ...