Rinse the potatoes with hot water, peel them, put them in a saucepan. To make the potatoes crumbly and tasty, peel, pour boiling water over them and cook over low heat under the lid. If you cook on medium or even high heat, the potatoes will fall apart on the outside, but inside they will remain raw - you will get mashed potatoes with lumps. Do not pour a lot of water, let some potatoes stick out. Then they can flip over. It's not good when potatoes absorb a lot of water. There will definitely be no airiness, because the water will make the puree heavy and dense.