Isso (prawn) vade (pattie) are beloved throughout Sri Lanka, and their popularity can perhaps be attributed to their deeply familiar and simple ingredients: lentils and prawns, along with onions and curry leaves. Topped with a spicy sambol – made of chopped onions, tomatoes, green chillies and lime juice – plus chilli sauce for extra punch, each fritter has the perfect balance of crispy texture, zesty aroma and spicy flavour. And at Rs 50 to 70 (12p to 18p) each, they are an inexpensive, tasty treat for the masses.Demi Perera (BBC)