Tips for those who want to share in my skill:

• Chose a convex potato, with two almost but not entirely flat sides
• Start on a the flattest side an peel in a short line along it, turn 180 and spiral around the peeled section until you are done
• avoid sharp corners, they weaken the strip
• the first and last turns are unavoidably sharp and therefore the hardest
• the wider the strip is, the shorter in needs to be