Here's the beef with the egg and the potato flour. I was trying to bake bread at the same time so I forgot to take photos of every step..
Here I've added the lemon peel.
Form the patties with your hands...
Put them in a hot pan with some butter.
Now they look ready!
Drain the tomatoes from unnessary oil and cut them in small pieces (or use ready-sliced).
Clean the pan and add the cream and the tomatoes.
Add the sage and let it simmer for a couple of minutes.
Add the patties and let it simmer a few more minutes. The sauce may look a bit pale but it is really delicious! Serve with pasta, preferably a kind with spinach.