Add poha to a plate and add in onions, green chillies, grated coconut, lemon juice, sugar and salt.
Mix all of them together. Add in water so the poha soaks a little bit and becomes soft.
In a pan, add a little oil , put in mustard seeds and let them pop.
Add curry leaves and a pinch of turmeric powder.
Pour this to the premixed poha.
Roast peanuts in the same pan until golden brown
Now add the roasted peanuts on the Poha mixture