Take them out and put them to the side. Add the cardamoms, the cinnamon and bay leaves and fry it up for a few seconds. Add the curcuma, the chili powder, salt, sugar and vinegar and fry everything while stirring continuously for about one minute. Add the mushrooms and the potato cubes and mix well. Turn down the heat to medium or low, cover the pot and let simmer for about 15 minutes till the potatoes are done.
Preparation Bring the milk to boil on a high fire, stirring continuously.
Take from fire. Mix the water and the vinegar. Add this mixture bit by bit to the boiled milk until the milk turns. Take a cloth and drape it over a bowl. Pour the milk into the tissues in order to filter it.