Slow Cooker Cider Pork Roast

Ingredients

• Salt, to taste
• 1/2 tsp ground ginger
• 1/2 tsp ground black pepper, to taste
• 4 large carrots, roughly chopped
• 1 stalk celery, roughly chopped
• 2 tsp vegetable oil
• 1 3-lb pork loin roast
• 1 1/2 cups water
• 1/4 cup all-purpose flour
• 2 cups apple cider
• 3 cloves garlic
• 1 apple, peeled and roughly chopped
• 1 large onion, roughly chopped