Chaat masala is an incredible blend of spices, with many variations. It’s a very popular masala in making Indian street food. It’s zingy, tangy, salty and spicy.
Peel and dice the potatoes into 1cm (½ inch) cubes.
Slit the green chillies lengthways.
Place a wok on a high heat, then add the following ingredients in this order: 200ml (7fl oz/¾ cup plus 2 tbsp) hot kettle water, oil, cumin seeds, diced potatoes, garlic paste, ginger paste, green chillies, tomato paste and salt