Curried sausages

Name: Curried sausages
Prep time: 10 min
Cook time: 40 min
Total time: 40 min
Yield: 6 portions
Ingredients: 1000 g sausages; 1500 g water; 2 garlic cloves; 1 onion; 20 g salted butter; 1 apple; 1 - 2 tbsp curry powder; 2 tbsp cornflour; 2 tbsp Beef stock paste; 2 tbsp tomato sauce; 100 g frozen peas; 40 g sultanas; 1 - 2 pinches sea salt; 1 - 2 pinches ground black pepper