Boil the potatoes in their skins in salted water for about 20 minutes, or until completely tender.
Peel the potatoes while still warm, then mash them through a potato ricer or with a fork in a bowl.
Let the mashed potatoes cool slightly, then add the egg, salt, and flour. Knead until a soft, non-sticky dough forms.
Divide the dough into several portions and roll them into logs. Using a sharp knife, cut into approximately 2 cm pieces.
Bring a large pot of salted water to a boil. Cook the gnocchi in small batches until they float to the surface (about 2 minutes), then drain.
In a skillet, melt the butter and add one minced clove of garlic. Sauté gently until fragrant, releasing its flavors.
Pour in the heavy cream and stir in the grated Pecorino cheese until you have a silky sauce.
Gently toss the cooked gnocchi into the cheese and cream sauce, ensuring each piece is coated.
Sprinkle with freshly grated truffle and ground black pepper to enhance the flavour even more.
Serve immediately, drizzled with a little extra olive oil for the perfect creaminess.
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