This piquant, sweet-and-sour fresh chutney comes from North India. It is an important part of chaat, the famous street food that brings together crisp, savoury discs made of semolina or plain (all-purpose) flour with roasted vegetables, puffed rice and fried besan (chickpea flour) vermicelli. As well as being an integral part of chaat, this chutney goes well with salads, potato patties, boiled chickpeas, Pakoras and Vegetable samosas.