Savoy Cabbage and Sausage Pasta Sauce

Two regional traditions have inspired this sauce: those of Treviso, in the Veneto, and of Bologna, in Emilia-Romagna. Treviso stews Savoy cabbage with sausage for a dish called verze e luganeghe while Bologna has a pasta known as gramigna con la salsiccia, short, curved homemade macaroni tossed with sausages and cream. I had just had both of them in their respective habitats within an interval brief enough that the taste of one was still fresh in the mind when I was sitting do