Earlier quoted context omitted.
Agreed. I went down this rabbit hole last year, going as far as even buying sodium citrate that's supposed to help it melt together, with mixed results and awful taste. Never came close to anything resembling a well melted, good tasting sauce.
Still buy your cheese in blocks and hand grate, but sodium citrate is better made at home for sauces I think. Titrate baking soda with a tart citrus juice (e.g., lime or lemon, whatever fits with the dish) over medium heat till incremental juice doesn't induce extra bubbles. You'll have a roughly neutral pH, citrus-flavored solution of sodium citrate suitable for nacho cheese and a variety of other dishes.
https://chatgpt.com/share/67eb161a-316c-8012-a9b0-95cb186dc8...
Does that sound like it's in the ballpark, or do you have any comments or suggestions?