Peel the sausage from the casing and cut into slices. Heat oil in a pan. Fry the sausage slices for approx. 6 minutes while turning. Clean and wash spring onions and cut into small rolls. Peel garlic and press it through a garlic press
Remove the sausage from the pan. Sauté the spring onions and garlic in the sausage fat for about 2 minutes. Dust with flour, sauté briefly and deglaze with red wine and tomatoes. Bring to the boil and simmer for about 4 minutes while stirring. Season to taste with salt, pepper and sugar
Meanwhile, prepare the pasta in boiling salted water according to the instructions on the packet. Wash basil, shake dry, pluck leaves from the stalks and cut into strips
Pour the pasta into a sieve, drain and put it back into the pot. Fold in sausage and sauce. Arrange on plates and sprinkle with basil. Arrange the ricotta on the plates