Lol no special duck fat here
I pre cut and soak them in cold water for awhile, rinse off the starch, let them dry for a bit, then blanch them once in lower temp oil around 325-335 (fries will be limp, tender), then remove them, let them cool a bit then put them back in hotter temp oil at around 375-385. I tried triple frying them last time but they turned out too stiff and not as tender inside. Twice is really good usually. Then I scoop them out of the oil while still hot and bit oily I put them in a brown paper bag with herbs/spices and give them a quick shake before serving. The hot oil on them helps the herbs/spices stick to them. A little bit of white sugar mixed in with the other herbs and spices gives a real nice flavor.