Put potatoes in a pot of cold water and a handful of salt. Boil roughly 15-18 minutes. (Do not over boil or it will fall apart).
Rinse with cold water so that you can cut the potatoes in half without burning your fingers. Cut potatoes in half and then pour 1 1/2 Tbsp of apple cider vinegar. Set aside.
In a small bowl, mix together the mayo, sugar, salt, gochujang, and remaining 1/2 Tbsp of apple cider vinegar.
In a large bowl, add the shredded carrot (you can use the large cheese grater setting), sliced green onion, and chopped cilantro.
Add the mayo dressing and the potatoes to the large bowl and mix gently. Refrigerate, then enjoy.