Wash and pressure cook the Chinese potatoes till soft by adding required water. Once they are cooked, peel and slice them into thick slices . If they are very small , you can use as such also .
Heat oil in a thick kadai .Splutter mustard, add urad dal, hing, broken red chilli and curry leaves .
Next take red chili powder, hing, salt, turmeric powder into kadai and give a quick mix .
Next add in cooked and sliced into Chinese potatoes into the spices .
Give a quick mix and make sure that the slices are coated well with the spice paste.Keep in low flame for 5 more minutes stirring occasionally until its crisp and cooked well on a low medium flame
Enjoy Chinese potato stir fry
Notes
Never over cook the chinese potato , just parboil it .
If you want can add some onions , garlic etc while roasting