What you need: 
some fat,
1 teaspoon of salt,
1 tablespoon of sesam,
1 tablespoon of rosmarin,
1/2 teaspoon of pepper,
2 pounds of potatoes,
3 tablespoon of oil,


What to do:
Put oil on the sheet metal. Put salt, sesam, Rosmarin and pepper into a bowl. Wash the potatoes, dry them and half them. Put the front side into the salt, pepper mixture. Put them with the front side onto the sheet metal. Paint oil on the potatoes and put the rest of the mixture on the potatoes. Put the sheet metal into oven. And back it 45 minutes by 200 Grad Celsius.