Ingredients

Serves 4

　　1 pound bowtie-shaped pasta (farfalle)

　　3/4 cup finely chopped onion

　　1 garlic clove, minced

　　2 tablespoons olive oil

　　a 2-ounce can flat anchovy fillets, drained and minced

　　a 28- to 32-ounce can tomatoes, drained, reserving juice, and chopped

　　1 tablespoon balsamic vinegar

　　1/2 teaspoon dried hot red pepper flakes

　　2 tablespoons drained capers, chopped

　　2 ounces thinly sliced prosciutto, chopped (about 1/2 cup)

　　1/4 cup finely chopped fresh basil or parsley leaves (wash and dry before chopping), or to taste

　　Accompaniment: freshly grated Parmesan

　　

Step 1

In a 6-quart kettle bring 5 quarts salted water to a boil for pasta.

　　

Step 2

In a large skillet cook onion and garlic in oil over moderately low heat, stirring, until onion is softened. Add anchovies and cook, stirring, 1 minute. Add tomatoes with reserved juice, vinegar, and red pepper flakes and cook, stirring occasionally, until slightly thickened. Add capers, prosciutto, basil or parsley, and salt and pepper to taste and keep warm.

　　

Step 3

Cook pasta in boiling water until al dente and drain in a colander. In a large bowl toss pasta with sauce and serve with Parmesan.