If somebody else is cooking the main meal, get them to cook the pasta and mince and then leave some mince out for you.
Slice a circle of red cabbage and a couple of slices of leek. Chop all this as finely as possible, including the white core of the cabbage. You can also use celery chopped finely too.
Then in a separate frying pan, using rapeseed oil, fry all the vegetables lightly. Add the mince and some soy sauce, say a quarter bottle. Simmer for a while, especially if you are having to cook the pasta.
When ready to serve add some more soy sauce, maybe another quarter bottle, and allow half a minute to warm it. The cabbage and the soy will give the sauce moisture, compensating for not having tomato.
My favourite meal!