Once, during a visit to Calcutta, I was invited to lunch by a woman whose reputation as a Bengali cook made me accept with delighted anticipation. The meal she served surpassed my expectations. What stood out above all the expensive fish and meat was her mochar ghanto, a fragrant dish consisting of banana blossom, or mocha, combined with tiny cubed potatoes, tinier coconut chips, chickpeas and spices. It’s a classic of Bengali cuisine, which is known for its flavourful yet delicate use of spices and a wide range of ingredients.