No ,, different stuff . I don't know enough to speak about it , but don't make that mistake . Not the same thing .I think saltpeter is just another name for cure #1 used for smoked foods.
Are you set up to pressure fry? I was interested in that for a while too.Saltpeter IS potassium nitrate... Like everyone said, be safe and use #1. I used salt peter all the time back when I liked to blow stuff up LOL. NO WAY it's in KFC. Odds are the person on the YT video means potassium CHLORIDE another form of "salt". I went down the fried chicken path a few times and the key is actually pressure frying (broasting) and brining.