Melt the top fat from the stew in a frying pan, fry the onion on it.
Add the stew, heat it up, and disassemble it into fibers with a spatula. It is not difficult to cook a good stew.
At this stage, it is good to add fried forest mushrooms, if any. I have no mushrooms this time, and therefore they are not superfluous there once!
You can add water to the consistency of thick porridge.