Then add the onions and fry until soft…don’t brown them. Now add the mashed potatoes, add salt, chili powder, turmeric powder, cumin powder and chilli flakes. Stir together then add the lemon juice, chopped coriander and chopped green chili. Taste and adjust salt and chilli, switch off and use in parathas or in buns, can be used in sandwiches too.