Well, not to panic @arcrai, all types of cabbage share these common traits with the vitamins and minerals that contain. Red cabbage actually has the highest vitamin C content...due to its red colour.
Hahaha! You are right, it is not that great for vegetables to be sitting around. Good thing cabbage lasts a long time.
The most time consuming part will be shredding the cabbage. Once that is done, along with the mincing and chopping, about 8 minutes of actual cooking time. I hope you try it and like it. :)