I cut corned beef into chunks and put in a bowl with a dash of red wine, worcester sauce, dijon mustard and salt and pepper (not loads just enough to "coat the beef")
Cut potatoes into chunks and parboil
Fry a chopped onion and a bit of garlic (I use about a teaspoon of lazy garlic cos...well... I'm lazy )
As the onions are browning, add the potatoes to crisp and add the beef (drained if there is too much excess liquid).
Do over a high heat until crispy at the edges, add salt and pepper and a poached egg to serve