Pulled pineapple and white beer ham, oven or slow cooker

Ingredients

• Smoked picnic pork shoulder with bone, approx. 2.5kg (5.5 lb)
• 1 liter (4 cups) pineapple juice
• 473 ml (2 cups) white beer
• 5 whole cloves
• 1/3 cup (80 ml) maple syrup
• 6 large garlic cloves, peeled and crushed
• 1 small yellow onion, finely chopped