Roast the peanuts well on a medium heat until aromatic & golden.
Pour puffed rice in a wide bowl. Clean up the dirt and powdery part. Best way to clean up is to sieve it.
If the puffed rice is not crisp, then dry roast them in a pan until crisp. Cool them completely.
Transfer them to a large mixing bowl. Add onions & tomatoes. Sprinkle salt, red chili powder, lemon juice & oil over the tomatoes.
Begin to mix the onions and tomatoes with the spice powder first. Then mix it with the puffed rice.
Then add add coriander leaves and peanuts. Toss the churumuri.
Serve churumuri immediately else they lose the crunch.
You can top it with mixture or boondi.