Pressure cook potato for 3 whistles. Peel off the skin and cut into medium sized cubes.

Heat a pan with oil. Temper with mustard seeds and fennel seeds. Add onion, curry leaves and garlic. Saute until onion becomes glassy.

Add kulambu milagai thool, biriyani masala and salt. Sauté until raw smell goes.

Add potato and Sauté for few mins until it gets coated well with masala.