Pork Neck Curry with a Tangy Sweet and Sour Taste

Ingredients

• 1kg pork neck
• 15ml butter
• 15ml olive oil
• 1 onion (finely chopped)
• 10ml mustard sauce
• 200g cherry tomatoes
• 1 dried curry leaves
• 3 dried chillies (small)
• 15 cumin seeds
• 15 coriander seeds
• 5 cardamon pods (crushed)
• 5ml dried fennel
• 10 whole peppercorns
• 5ml salt
• 5ml turmenic
• pinch of cinnamon
• 2 green chillies ((optional) finely chopped)
• 5 cloves garlic (crushed)
• 2cm fresh ginger (chopped)
• 100ml white wine vinigar
• 30ml brown sugar
• 15ml lemon juice