Greet your guide outside Esplanade metro station at 5:00pm and catch the train up to a district little visited by foreigners and known for its cuisine. When you disembark, you'll dive straight in with an exotic lasse found at a local street vendor before hopping into a tiny joint that's been whipping up some of the best masala curries in Kolkata for more than a century. As you eat, your guide will tell you stories of old Calcutta. Jump aboard a local bus for a short journey up to one of Kolkata's most celebrated seafood restaurants where you'll try their signature jumbo prawn covered in chingri coconut cream sauce and a mouth-watering curried fish mousse steamed in a banana leaf. After leaving you'll clamber aboard one of the old richshaws, the only place where these wooden carts still exist in India and take a short tour of the area en route to the next foodie stop. Gorge on a prawn kabiraji at a legendary kitchen started by a Scot in the 19th Century. Kolkata might seem busy, but your guide will take you on a walk down through a peaceful district pointing out temples and local life along the way. As you meander the backstreets of old Kolkata, you'll try tasty titbits from the city's most famous onion bhajis to zingy gram salads made from herbs and pulses. Sip on local ginger infused chai tea before jumping on board one of the old trams that have been plying the streets of Kolkata for over a century for a short journey to College Street. Here, piles of school book sellers are passed by university students on their way back from lectures. Drop into a local cafe to sample a famed coconut sherbet drink and then dive into Begali treats at a nearby sweet shop. The evening finishes in the faded grandeur of an old colonial coffee shop where students are busy debating, ceiling fans whirl overhead, and waiters serve coffees in traditional garb. This isn't just a foodie tour, it's a tour into the heart of Kolkata.