Serves 4

4 ounces pancetta, cut into 3/8 inch to 1/4 inch dice
1 tablespoon butter
1 pound asparagus, woody ends trimmed and sliced into 2 inch pieces on the bias
1 1/4 cup leek, thinly sliced crosswise (white and pale green parts only)
2 cloves garlic, minced
Zest of one lemon
1 teaspoon orange zest
2 tablespoons toasted pine nuts
1-2 tablespoon Italian parsley, chopped
Salt and freshly ground pepper to taste