Melt the butter in a saucepan for the mash, add the mash and cream and mix thoroughly, serve a big spoonful with the sausages and onions and gravy. Stand back and marvel at what you have just created.
Add the onion and fry gently for around 10 minutes, or until soft and translucent. Add the garlic, oregano and spices. Continue to cook for a couple more minutes then season with salt and pepper.