Roast Luganega Sausage with Baby Potatoes

Luganega—a single, slim coiled sausage—is from northern Italy, particularly Lombardy, Trentino, and the Veneto. It’s made with pork and typically seasoned with Grana cheese, meat broth, marsala, and spices; there are lots of variations. The sausage tends to be rich (fatty), and is good stewed, grilled, or roasted.

Here, it’s roasted on a bed of baby yell…