[GunMaster357]

Personnally, I prefer to use a frying pan. The potatoes are usually a leftover from the day before as we tend to cook them for more than one meal.

1) Slice or dice the potatoes
2) Put canola oil in a frying pan along with butter (be generous with both)
3) Heat until the mix is boiling
4) Throw in the potatoes
5) Move them around with a wooden spatula so they're coated with the mix oil/butter
6) Let them fry a bit
7) Repeat 5) and 6) until they're to your liking

And be aware that some varieties of potatoes are for only mashed potatoes. They are softer when boiled and don't do well when cooked a second time.