Creamy melted Fontina cheese with butter, egg yolks, and white truffle shavings is Valle d'Aosta's pride. This rich vegetarian mediterranean fondue is high protein and perfect for family sharing.
Slice Fontina cheese into thin strips and soak them in 1 cup milk for at least 1 hour; this softens the cheese and enhances meltability.
Transfer the soaked Fontina and milk to a double boiler over medium-low heat, stirring constantly to ensure gentle, gradual melting and smooth texture.
Add unsalted butter and continue stirring until fully integrated, managing the heat to avoid boiling.
In a small bowl, lightly beat egg yolks; slowly whisk them into the melted cheese mixture while consistently stirring, maintaining low heat to prevent curdling.
Once the mixture becomes thick and creamy, season with kosher salt and black pepper, remove from heat, and transfer to a warmed serving dish. Top with white truffle shavings immediately before serving.