Apple Strudel Strudel di Mele

Name: Apple Strudel (Strudel di Mele)
Ingredients: For the pastry:; 2 1/2 cups (300 grams) flour; 1/2 cup (125 ml) warm water; 1 egg; 2 teaspoons olive oil, plus more for brushing; 1 pinch salt; 1 teaspoon vinegar (white wine or apple cider are best); For the filling:; 4 apples (Golden Delicious preferably), about 750 grams; Zest and juice of 1 lemon; 3 tablespoons (50 grams) currants; 2 tablespoons (30 grams) pine nuts; 1/4 cup (60 grams) turbinado sugar; 1 teaspoon ground cinnamon; 2/3 cup (70 grams) breadcrumbs; 1/3 cup (80 grams) butter; 2 tablespoons rum, optional; Confectioners' sugar, for dusting