Not sure about Autism related food issues, but I have ARFID and most likely that would cause me a ton of anxiety and do some damage to my ability to eat food you make again.

That said, there's a slight chance that I don't experience that, and an even more slight chance that I'd actually be able to eat it again despite knowing. In that case, I'd be ecstatic because there's not a single person on this planet who wishes I could eat more food than myself, but I'd still ask you about every food I eat at your house again to avoid it happening again.

I've tried "just make it and don't tell me what's in it" as a strategy before and found very quickly that the slim chance it helps get me over a certain food isn't worth the much more likely chance that it makes it worse.