Nic's 'Not So Secret' BBQ sauce

Ingredients

• 1 onion (finely chopped)
• 3 garlic cloves (finely chopped)
• 25 g butter
• 1 hot chilli (finely diced (leave the seeds for a hotter punch))
• 1 tsp onion powder
• 120 ml apple juice (1/2 cup)
• 120 ml cider vinegar (1/2 cup)
• 480 ml Heinz tomato ketchup (2 cups)
• 2 tbsp Worcestershire sauce
• 80 ml French's American mustard (1/3 cup)
• 120 ml runny honey (1/2 cup)
• 1 tbsp tomato puree
• 1/2 tsp sea salt
• 1/2 tsp black pepper (coarsely ground)
• 1 tbsp hot chilli sauce