I know this sounds odd but my Nan used to make curried sausages with milk. Always a favourite. Not exactly sure how she did it will try to find out but I know that she used to sweat the curry powder off first before adding anything else and then would add onions rings, cook till soft and then add the milk. I think she also boiled the sausages separately and when partially cooked cut them into bite-sized pieces and added to the curry mix.