Cook the farfalle (butterfly noodles) in plenty of boiling salted water with a few drops of olive oil and the sage until they are al dente.
Meanwhile, dice the Gorgonzola. Melt the butter in a large pan, add the gorgonzola cubes and slowly melt over low heat. Gradually pour in the cream; always stir. Season with white pepper from the mill.
Let the sauce thicken for about 5 minutes until it becomes a creamy cream. Stir in a few tablespoons of pasta water - depending on the desired consistency - and mix in 1 tablespoon of grated Parmesan.
Drain the pasta, drain well and add to the pan with the Gorgonzola sauce. Mix vigorously, remove sage leaf if necessary. Either put everything in a bowl or on a serving plate, serve immediately and serve with the rest of the parmesan.