Clockwise from top right: kachumar, tamatar gosht, beetroot raita, rogni roti at Darjeeling Express, London

Beetroot raita, Darjeeling Express, London

Courgette sabzi, Darjeeling Express, London

Courgette sabzi, Darjeeling Express, London

Left to right: ghee prawns, venison kofta, karai asparagus at Darjeeling Express, London

Venison kofta, Darjeeling Express, London

Karai asparagus, Darjeeling Express, London

Ghee prawn, Darjeeling Express, London

Making vegetable samosas, Aligarh, Uttar Pradesh

Kati roll, Darjeeling Express, London

Puri with tomato chutney, aloo dam, Darjeeling Express, London