The Mohawk Valley area where I live and the Syracuse area an hour west of here, are familiar with salt potatoes. They sell the salt and small potatoes in a 5 lb. bag. You dump the package of salt in a pan of water and mix until it's dissolved. Add the potatoes and cook until tender. They're delicious with butter on them. When my youngest son moved to Indiana years ago, he discovered that they had no idea what salt potatoes were. He hadn't realized they were a regional thing.
As you can guess, I’m not from Indiana, and I’ll tell you. I’ve never heard of salt potatoes before either.
Speaking of regional differences, when my husband and I were first dating in college, he asked if I wanted to go out with him for pie. He’s from Long Island. I’m from northern Florida, which is quite Southern. I told him “sure!” , then hung up the phone and asked my girlfriends “how do you dress to go out for a dessert date?” I even ate a little bit of food in my room, because I hadn’t had dinner yet. It’s been over 40 years, and that story still makes me smile. Times were so simple then.