Preparing the dough
Mix together the durum wheat and wheat flour and make a well in the middle. Add the eggs and oil to the center and mix well. Work in the durum wheat and flour well, and if required add a little lukewarm water, until a smooth, pliable dough is formed. Wrap the dough in cling film and leave to rest for at least half an hour.
Preparing the Schlutzer
Glaze the shallots in olive oil before adding the garlic. Add the roughly chopped radicchio and continue to sauté.
Quench with the red wine and leave the liquid to reduce a little before adding the balsamic vinegar. Season with salt, pepper, chili and nutmeg.
Reduce the liquid again and then remove from the stove to cool. Roughly mix the radicchio mixture and blend in the little cubes of mountain cheese and the finely chopped pineapple sage.
Roll out the pasta dough thinly using a pasta machine. Cut out discs using a round cutter. Place the radicchio and cheese filling in the center of the discs. Brush the edge of the pasta dough with water and fold the pouches in half-moon shapes. Press the edges down well to seal.
Cook the Schlutzer in boiling salty water. (approx. 3 minutes.)
Serve the ravioli on warm plates with grated Parmesan and melted butter. To garnish sprinkle with radicchio leaves cut into strips and pineapple sage.