Every Good Friday, families from Puglia enjoy a pie crust made with white wine, oil, and flour, and stuffed with an onion filling that varies from village to village. My Zia Rosa’s is by far the best in the family. We all love it so much that she makes it throughout the year.
To make the filling: Trim the green ends of the scallions. With a paring knife, split the bulbs of the scallions in half. Cut the scallions into 1½-inch (4 cm) pieces. Wash them well under cold water.
Heat the oil in a small stockpot over medium-high heat. Add the scallions, tomatoes, olives, and wine. Give the pot a good stir with a wooden spoon. Cover