If your slices are sizzling as soon as they're on the stove, you can bet that in a few minutes, they'll be blackened in some parts yet unappealingly soggy in others. Exposing the bacon to too much ...

Heat 1 tablespoon oil in a 20cm/8in lidded frying pan, add the bacon and fry over a high heat ... towel – this prevents the rosti from being soggy. Put the potato in a bowl, add the onion ...