Slow Cooker Crispy Chinese Shredded Chicken

Ingredients

For 10 servings

• 3 - 4 lb / 1.5 - 2 kg whole chicken (, skin on)
• 2 1/2 cups Chinese cooking wine ((or sherry) (see notes))
• 3/4 cup brown sugar ((or substitute with white sugar))
• 1/4 cup black vinegar ((or substitute with malt vinegar, or white vinegar. Don't use balsamic))
• 1 1/4 cups light soy sauce ((or substitute with 3/4 cup ordinary soy sauce + 1/2 cup water + 1 tsp salt))
• 3 tbsp coarsely chopped ginger ((no need to peel))
• 4 garlic cloves (, crushed (not minced - see notes))
• 3 tbsp cooking oil ((vegetable, peanut or canola))