Slow cooker pork, shallot, red pepper goulash

Ingredients

• 1kg diced pork shoulder, diced into 3cm pieces
• 2 tbsp olive oil
• 400g shallots roughly chopped
• 2 red peppers, sliced
• 3 cloves garlic, crushed
• 2 tbsp mild paprika (unsmoked)
• 2 tsp caraway seeds
• 400g can chopped tomatoes
• 300ml water
• salt and freshly ground black pepper
• 150ml sour cream