The cooking is sometimes bang on, sometimes a little slapdash, but then piques your interest all over againIndian Cafe Racer on Bristol Street, Birmingham, spent its fledgling years tucked behind a curtain at the back of the Duke of Wellington pub just a few doors up from its fancy new home. There was a Royal Enfield motorcycle, chequerboard floors and a psychedelic Indian soundtrack, but this small, homespun spot from Azad Kayes quickly became culty, then oversubscribed, then in need of a bigger home. It’s a good news tale for the Brum food scene.For those who remember it, south Birmingham’s…