Aloo posto is a traditional potato dish originating from Bengal. The dish consists of potatoes cooked in poppy seed paste and it's usually made with a combination of potatoes, poppy seeds, dried red chili peppers, lemon juice, vegetable oil, and salt.

The poppy seeds and dried red chili peppers are ground into a paste. The potatoes are cut into quarters and fried in oil over medium heat until soft and golden. The poppy seed paste is fried in the same oil, and the potatoes are then added back to the pan or wok.

The dish is seasoned with salt, covered with a bit of water, and cooked until the water evaporates. Once removed from the heat, lemon juice is stirred in the dish and aloo posto is ready to be enjoyed. It's recommended to serve aloo posto with dal and steamed rice on the side.