Apple Pie

2 pie crusts

1 tablespoon apple cider vinegar, chilled

1 large egg

1 tablespoon whole milk

3 1/2 pounds Honeycrisp, Braeburn, or Golden Delicious apples, or a mix

1 teaspoon ground cinnamon

1/4 teaspoon ground nutmeg

2 tablespoons lemon juice

Coarse sugar, for sprinkling