You can use olive oil to roast these potatoes but they would just be more evil if you use duck fat. Sometimes, potatoes call out to be more evil.
1 bag of small white potatoes, rinsed thoroughly, halved
1 bunch of flat-leaf parsley, roughly chopped
1. Put potatoes on roasting pan. Drizzle with duck fat. Sprinkle with salt and pepper and parsley. Bake for about 30 minutes.
Even better if you use duck fat