01 - Boil the potatoes in salted water until tender, about 20 minutes. Drain and return to the pot.
02 - Mash the potatoes until smooth, then add the butter and mix until melted.
03 - Pour in the fresh cream and stir until well combined.
04 - Gradually add the grated cheese, stirring continuously until melted and the mixture is smooth and elastic.
05 - Season with salt and black pepper to taste, then serve immediately.