Heat a pan, dry roast the peanuts, take it out and cool it.
Add roasted peanuts, green chilli, ginger, garlic,salt and sufficient water in a mixer grinder jar and grind it well into a smooth paste.
Take it out in a bowl, add lemon juice into it and mix it.
Heat oil in a tadka pan, add mustard seeds and dry red chilli into it, fry it for few seconds and then pour the tadka in the chutney, mix it and serve it.