Peel off the skin of the yam and cut into big chunks firstly.
Wash and keep immersed in water. Then chop the yam uniformly into sticks.
To do this, firstly slice it into thin squares/ rectangles and then stack the slices and chop them to sticks as shown in the picture.
Soak tamarind in hot water for 30 mins and extract a thick pulp from it.
Mix the tamarind pulp, sambar powder, salt with the yam sticks and keep aside for 20 mins. You can add little turmeric as well if you want.
After 20 mins, it would have left more water within.
Heat oil and when oil is hot, squeeze out the excess water and sprinkle the yam in hot oil.
Cook in medium flame with constant stirring and never leave it unattended as it gets easily browned towards end.
Also keep turning while cooking now and then ensures even cooking.
Drain from oil when the ‘Shhh…’ sound completely ceases and turns crispy. Drain over paper towel finally.