There’s a harmony and a soulfulness to Sara Jenkins’s cooking, and everything at Porsena reflects that, from décor, lighting and service to the uniformly robust and delicious cooking. Jenkins’s lamb sausage pasta, anneloni con salsiccia e rape (ring-shaped pasta, spicy lamb sausage, mustard greens),is a medley of rich ochre shades that in and of themselves evoke Tuscany. Take one bite, and you realize the dish doesn’t just look Italian, it speaks perfect Italian, too. The spicy kick of the crumbled sausage is softened by the rich creaminess of the sauce (not too much and not too little of it) and the pasta, like all of Porsena’s, is gloriously, perfectly al dente.