Beat the egg yolks with the cream, Grana Padano, black pepper, saffron and a pinch of salt.
Chop the bacon and fry until golden and crunchy.
Leave to one side while cooking the pasta “al dente”, in a lot of salted, boiling water.
Drain but keep a little cooking water.
Mix the spaghetti in the frying pan with the bacon and fold in the egg mixture.
Heat gently for a few moments, trying to avoid the egg becoming scrambled. It should have a creamy look.
Sprinkle, if desired, with more grated Grana Padano.