Clean the potatoes but leave the peel on. Boil the potatoes in lightly salted water for about 15 minutes. Don't boil them too soft.
Peel the potatoes using a knife. Let the potatoes cool off before you proceed. You can with advantage do this the day before you actually need the browned potatoes.
Pour the sugar in an even layer on a cold frying pan. Turn on the stove at medium heat and let the sugar melt without stirring in it. Try to avoid using a frying pan with Teflon coating.
When the sugar is melted add the butter to the pan and turn up to high heat. Add the potatoes to the sugar/butter mixture.
Fry the potatoes in the sugar/butter mixture for about 5-7 minutes. Turn the potatoes constantly. If you are making these potatoes for your Christmas dinner and you have some extra duck grease - then add 1 dl (1/2 cup) of the grease to the pan with the potatoes. This will give the potatoes a great taste and a nice look.
When the sugar is sticking evenly to the potatoes they are done.