True, nuts were a good choice. Unfortunately the cashews and almonds supplied at my office were all unsalted and I couldn't be bothered to buy my own for the brief trial.
When I temporarily went off keto, one of the first things I did was to buy one of those huge containers of salted mixed nuts from Costco. I gorged on the entire thing for three days and my mouth hated me for the next week. I thought I had suddenly come down with bad toothaches. Nope, I just burned all the skin off my upper mouth and gums from excess salt consumption.