Rump Steak Hamburger

In a not completely successful effort at keeping my children away from the burger chains, I have been making these hamburgers for years. Not often with rump steak, I admit, but a pretty good version can be made from minced chuck – better get this from a butcher. Supermarket mince often contains ‘mechanically recovered’ bits that have an unpleasantly granular texture when cooked, like having a mouthful of small ballbearings. So, use the best mince if not rump, because the dish is worth it. A