Hubby loves salt & vinegar potato chips, but doesn't want all that salt in his diet anymore. Hubby also enjoys cucumber & onions soaked in vinegar & water so I thought I'd try combining ideas. I have very good non-stick cookware, so didn't need oil to fry the potato's.
Peel & slice sturdy potatoes such as red skinned or Yukon Gold potatoes as you would normally for fried potatoes. Preferably 1/8" thick or thinner. The amount is really up to you. I did enough for 1/2 for a medium mixing bowl, and added in the sliced onion.
Place potato and onion slices in a bowl, cover potatoes & onions about 2/3rds of the way with water and fill to cover the veggies with vinegar of your choice. I let my bowl soak about 2 hrs.
Drain liquid from the bowl, add potatoes & onions to appropriately sized frying pan. Season potatoes & onions with McCormick's Montreal Steak Seasoning taking care not to over season the veggies.
Fry as you normally would your fried potatoes. I have cookware I do not need to add oil to, so used the well fitting lid and let potatoes cook and brown, stirring occasionally and adding a little water to keep the food from burning. These choices of potatoes keep a firm texture even after fully cooked.