Combine sausage mince, minced steak, breadcrumbs, peeled and finely-chopped onions, curry powder, salt, pepper, parsley and lightly-beaten egg in a bowl. Beat until mixture is well combined. Gradually add milk and water, continue beating until mixture is very smooth.
Shape meat mixture into meatloaf, place in greased baking dish. Bake in moderate oven 30 minutes. Remove from oven, carefully pour off any surplus fat. Pour sauce over meatloaf, return to oven bake for further 45 minutes, basting with sauce frequently. Serve hot with veg or cold with salad.
Combine all ingredients in saucepan, bring slowly to boil, reduce heat, simmer 5 minutes.