Heat oil for deep frying and fry the potatoes on low flame first till they are lightly coloured.Then remove it and increase the flame to a high and deep fry it agin till golden brown.Drain it and set it on a paper towel.
Heat oil and crackle some cumin,red chilli,garlic for 1 min till garlic get golden colour.
Now add in cashew and fry till golden...Followed by red chilli powder,Turmeric powder,Salt and sugar...
Add in the fried potatoes and toss well..Sprinkle in the chat masala and toss well..