Chocolate Chip Rugelach

Ingredients

• 2 cups all-purpose flour
• ¼ teaspoon salt
• 1 cup (2 sticks) unsalted butter, cold, cut into small pieces
• 1 (8 ounce) package cream cheese, cold, cut into small pieces
• ⅓ cup sour cream
• ½ cup white sugar
• 1 tablespoon ground cinnamon
• 1 cup miniature chocolate chips, or finely chopped chocolate
• Splash of milk
• 1 egg white
• Raw or granulated sugar for sprinkling