To prevent milk souring after boiling, you need to throw a piece of sugar into the pan. Close with a lid. Когда молоко нагреется и будет близко к закипанию, его необходимо каждые 2-3 минуты мешать ложкой (в этом случае молоко не подгорит точно). When a peculiar dairy park and bubbles appear along the edges of the pan, you need to remove the lid, prepare a stand and a tackle. From this moment it should be monitored when the milk begins to rise. After waiting for this, you need to quickly remove the pan from the stove and put it on the stand (using the tacks). If, nevertheless, milk rises very quickly and there is no time to remove it from fire, for some reason, then you must try to stop it by blowing at it. You need to blow until the milk drops. At the same time, you need to quickly place it, turn off the fire and remove milk from the stove as soon as possible.