Heat the clarified butter, add the cumin seeds.
When it splutters, add the potatoes and stir-fry.
When the potatoes become light brown, add salt, chilli powder and sugar and continue to stir-fry till well blended.
Remove from heat, add lemon juice and serve.
Key Ingredients: potato, clarified butter, cumin seeds, rock salt, sugar, lemon juice, tamarind