Nandu Varuval at TrishnaPhotography by Neil WissinkConvention has it that Indian food isn’t well accompanied by wine. A sweet white at a pinch perhaps, though most certainly not red. But sommelier Sunaina Sethi at Michelin-starred Trishna in Marylebone has emphatically disproved this belief. One half of the super duo who run two of London’s most esteemed Indian restaurants – she and brother Karam are also behind Gymkhana in Mayfair – Sue [Sunaina] stumbled onto he...