Fry the onions in hot oil until browned. Add the spices and roast for about 1 minute. Add the spinach and Chinese cabbage and sweat for about 5 minutes while stirring. Add the milk. Simmer gently for approx. 15-20 minutes with the lid closed. If spinach and Chinese cabbage do not give enough liquid, add some water if necessary. Season to taste with salt and pepper.
I like to eat basmati rice or baked potatoes with it.