Ingredients 1 (14-ounce; 397 g) package thawed puff pastry 3 quarts (2.8 liters) boiling water 8 medium-large Pink Lady or Granny Smith apples (about 3 pounds; 1.3 kg) 3 teaspoons (15 ml) apple cider vinegar, divided 1 cup (200 g) granulated sugar 8 tablespoons (113 g) unsalted butter, cubed 1 teaspoon (5 ml) vanilla extract Flaky sea salt, for garnish Crème fraiche or whipped cream, for serving (optional) Directions Adjust oven rack to lower-middle position and place a rimme
