Clean, wash and shake spinach dry. Peel and finely dice 1 onion and garlic. Heat 1 tablespoon of oil in a saucepan. Sauté onion and garlic cubes for about 4 minutes until translucent. Add the spinach and stew in a closed pot for about 2 minutes until the spinach has collapsed. Season to taste with salt and nutmeg
Peel and finely dice 1 onion. Wash, clean and halve the tomatoes. Wash sage, shake dry. Wash meat, dab dry, season lightly with salt and pepper. Cover with pancetta and spinach. Roll up from the long side, cut into thirds and pin with wooden skewers
Bring cream, milk and 700 ml water to the boil. Add butter and about 1 teaspoon salt. Stir in semolina and continue stirring over low heat for 4-5 minutes. Then cover and let it swell for about 15 minutes on the switched off hotplate. Stir 1-2 times in between
Heat 2 tablespoons of oil in a frying pan. Fry the rolls in portions all around for about 4 minutes. Remove the rolls, fry the onion cubes and tomatoes briefly in the frying fat. Season with salt and sage, except for a little garnish. Deglaze with stock, loosen frying set, bring to the boil. Season with vinegar. Put the rolls back into the pan, put the lid on and let them simmer for about 5 minutes
Season creamy polenta with salt and nutmeg. Arrange polenta, rolls, tomatoes and sauce. Garnish with sage