Clean and peel potatoes. Slice at the lowest setting possible on a mandoline over a large bowl. Add 2 cups of vinegar and then add cold water to the bowl until it covers the potatoes and then add some ice. Let sit for 30 to 60 minutes.
Meanwhile, line a large baking dish with a clean kitchen towel and have paper towels ready.
Once the potatoes have soaked, drain into a colander and give a quick rinse. Shake off excess water.
Add potato slices to the towel-lined baking dish in a single layer and then blot dry before adding more in another layer and patting dry with paper towels. You can also line in layers of potatoes, paper towels/kitchen towels.
Meanwhile, heat 4-5 cups of vegetable oil in a saute pan until it reaches at least 350 degrees and up to 365 degrees. Use an instant read thermometer, or use the wooden spoon test.
Add potato slices to hot oil and let fry for 2 minutes on side and then turn to finish on the other side, until golden and crispy.
Remove from pan with a slotted spoon onto a paper towel lined plate. Sprinkle with vinegar and salt mixture on one side and then turn chips and sprinkle on the other side. Let cool on a single layer on a plate.
Transfer to a larger plate or platter and serve! Or store in an airtight container for 1 - 2 weeks.