Rinse the poha under the water till it softens. The crunchiness should be gone and becomes mushy.
Add sugar, salt and turmeric powder to poha and gently mix with your finger tips.
Dry roast the peanuts and pottukadala (if using) in a wide pan. Keep it aside.
Heat oil and add the mustard seeds. once it pops, add chopped onion, curry leaves and green chilli. Cook, till it becomes soft. No need to brown the onion.
Add roasted peanuts and stir. Add poha and gently stir, till everything is combined. Cover and steam the poha on low flame for 3-4 mins.
Add grated coconut, chopped coriander leaves and lemon juice. Gently mix. Do a taste test and add more slat or sugar. Cover and cook for 2-3 mins.
Remove from fire and serve hot.