If your sausages aren't pre-cooked begin by preparing them. To pre-cook the sausages, place them in a large pot and cover them with water. Boil until the saugsaes are cooked. Drain the water and set the sausages aside.
Preheat your oven to 160 degrees celcius.
Use a grater or food processor to grate the onions, carrots and apple. Place into a dutch oven or casserole dish (with a lid).
Combine the cornflour, brown sugar, curry powder, vinegar and sauces into a measuring jug. When a paste has formed, add the boiling water and mix.
Pour the liquid over the grated vegetables and combine.
Add the sausages and raisins (optional) and nestle into the sauce. Place the lid on and place in your oven for an hour and a half.
Serve with mashed potato and steamed green vegetables.