Peel, wash and cut the potatoes into pieces. Quarter pumpkin, remove seeds, cut into slices, peel and dice. Weigh 300 g pumpkin pulp and cook with the potatoes in salted water for about 20 minutes. Wash sage, shake dry, pluck leaves from the stalks. Slice cheese into thin shavings
Drain potatoes and pumpkin, press both through a potato press, season with salt, pepper and nutmeg. Knead the starch into the potato and pumpkin mixture. From the gnocchi mass on a work surface sprinkled with starch, form rolls about 2 cm thick. Cut the rolls into slices about 1 cm wide. Press in grooves with a fork dipped in starch
Cook the gnocchi in boiling salt water for about 5 minutes until they float to the surface. Take them out and let them drain. Heat oil and butter in a pan. Sauté the sage in it and take it out. Fry the gnocchi in the frying fat for about 5 minutes, turning carefully, seasoning with salt and pepper if necessary. Arrange the gnocchi, sprinkle with sage and parmesan