Many swedes are brought up with this dish. It's called Pytt i panna here, and when I translated it, it said "hash" (but I don't know 'bout that..please correct me if I'm wrong!). Well, it's a..hmm.. dish full of left-overs and it's tasty like hell! You eat it with a fried egg and beetroot.
1 tsp butter (unsalted)
Do it like this:
Shop everything to little pieces and fry in a frying pan. Fry the onion and potatoes first. Fry the egg last, and add to the dish. Eat!