This is a simple and luxurious dish best served immediately.
Bring a large pot of salted water to a boil.
In a large skillet, heat the butter until melted. Add the lemon juice and the dry white wine. Cook together for about a minute. Add the cream and simmer for about five minutes until slightly thickened.
Cook the pasta until al dente. Drain it, but retain a cup of the cooking water.Add the pasta to the cream sauce.Cook the pasta in the sauce, adding the reserved pasta water as needed if it seems dry. Serve immediately with a garnish of caviar.