apple cider vinegar and ½ cup ice-cold water in a small bowl and drizzle over flour mixture, mixing with a fork to combine. Pink Lady or other firm, sweet-tart apples, peeled, cored, thinly sliced, ⅓ cup (packed; 68 g) dark brown sugar, ¼ cup (50 g) granulated sugar, 2 Tbsp. Scrape apple mixture into bottom crust, arranging apples in an even, compact layer; dot filling with 2 Tbsp.