1. In a skillet, panfry potato cubes in oil till they are half cooked.
2. Add in garlic, shallots and chilli and continue frying till the shallots have softened and the potato cubes have crisp edges. Make sure your flame is not too big.
3. Just before dishing them out, pour in the tamarind mixture and stirfry to coat all the potato cubes evenly. Allow the gravy to bubble and thicken slightly. Taste test - you may like to add some salt. Sprinkle finely chopped spring onions (the green part) for some colour, if you like.