Baked Ham - Exceptional!

Ingredients

• 1 bone-in ham, shoulder roast
• 2 stalks celery, cut into chunks
• 2 carrots, cut into chunks
• 1 onion, cut into chunks
• 6 peppercorns
• 1 teaspoon dried whole leaf thyme
• 1 teaspoon dried whole leaf rosemary
• 1 bay leaf
• 8 cloves (the spice)
• 1 cup brown brown sugar
• 2 teaspoons dried mustard powder
• 3 tablespoons flour
• 3 tablespoons pineapple juice
• 540 ml pineapple slices in juice, drained reserve 3 tbsp ofthe juice