Wash sago well and keep to drain in a colander. Whisk the thick yogurt with half a teaspoon of salt. Mix sago and yogurt well. Keep aside for one to two hours. Once softened, remove sago onto a piece of cloth and spread it to dry.
Meanwhile, dry roast peanuts and remove husks. Grind to a coarse powder. Split cashewnuts. Remove stems, wash and chop green chillies. Heat ghee in a kadhai and fry sago a little at a time in a handled metal strainer.
You might have to cover the strainer because sago splutters as it bloats up. Drain the fried sago and place on an absorbent paper. Once the sago is done, fry the cashewnuts to a light golden colour. Drain on paper.
Lastly, fry green chillies till crisp. Take a big vessel and mix all the fried ingredients with the peanut powder adding salt and sugar to taste. When cool store in an airtight container.