I recall reading some on Fathead blog a million years ago about doing this testing, and how what he'd eaten earlier in the day or even the day before seeming to affect (reduce) the carb-effect of something like a potato if the prior food had been solid LC protein-fats. My memory is super fuzzy here so pardon me if this isn't totally accurate, but I think the base is probably sound: meals don't happen in a vacuum inside a living system.

Food with it, before it, and maybe other things (exercise?) are likely factors as well. And how it's prepped, as K said. I suppose if you make it too easy to digest, it does so rapidly, likely increasing the BG impact.

I used to be profoundly insulin-resistant. I had huge dark areas under my arms. A glucometer when I began LC was enlightening. (Including about NOT eating, when my blood sugar looked like a mountain range, of falling too low, then being kicked up to compensate, in a cycle all day. Not eating is more a problem for me in high-BG than eating anything LC.) I think I'm relatively stable now (e.g. no extreme responses) but I should probably consider doing a measure cycle out of curiosity again.

PJ