To make Pino Ice, you will need a lot of natural yogurt. What to do if there is not enough, only one pot, but you don't want to go to the store? If you are like me and you always have milk in your fridge, you are saved. You can make yogurt in a thermos. No yogurt makers and dry starter cultures. We need 1 litre whole milk, 200ml yogurt, and one 1½ litre thermos. Pour boiling water into a thermos, pour out, wait until steam comes out and close the lid. We need to keep the thermos warm inside. Then heat the milk to 38-40°C. Pour room temperature yoghurt into a separate container, add 100ml milk and stir so that there are no lumps. Pour in the remaining milk, mix well, pour into a thermos, close the lid and leave for 6-8 hours. Put the ready yogurt in the refrigerator for 1 hour 30 minutes - 2 hours to stop the growth of bacteria. And remember the connection: the longer the yogurt is in the thermos, the sour it tastes.