Slow-Cooked Whiskey-Molasses Shredded Beef

Ingredients

• 1 beef Bottom Round Roast (about 2-1/2 pounds), cut into 1-inch pieces
• 1/2 cup whiskey
• 1/4 cup plus 2 tablespoons apple cider vinegar, divided
• 1 can (6 ounces) tomato paste
• 4 tablespoons packed brown sugar, divided
• 1/4 cup molasses
• 1-1/2 teaspoons salt
• 1/2 teaspoon ground red pepper
• 1 tablespoon Dijon-style mustard
• 2 cups shredded carrots
• 2 cups diced Granny Smith apple