A more modern example might be that recently discovered Babylonian Lamb Stew [0]. Most of the scholarly reconstructions of the stew follow the recipe very literally, and the result is, frankly, awful, because ancient readers would probably have made cultural assumptions about certain steps in the recipe. Meanwhile, some internet cooks who take a stab at the same recipe come up with something arguably much better, because they're applying their knowledge as cooks to guess what might have been stated or unstated by the recipe. [1]
Makes you wonder why no one thought to just take a copy of one of the statues to a modern artist and say, "Hey! How would you paint this?" I'm willing to bet that, even now, it would be reasonably close to how an artist 2000 years ago might have approached it.
[0] https://eatshistory.com/the-oldest-recorded-recipe-babylonia...
[1] https://www.tastinghistory.com/recipes/babylonianlambstew
https://classics.rutgers.edu/the-hair-archaeologist-janet-st...
That's going too far. The person recording them might be the same person who is used to making the food, or might be taking literal dictation from that person.
Knowing how to make food isn't the same skill as knowing how to explain the process in a way that someone who isn't already trained to make the food can follow.
It's the difference between "a chicken stew flavoured with turmeric and cumin, then rice enough to cook in and fully absorb the broth" and "first, take 500g of boneless skinless chicken thighs..."
There are folks that will insist that we don't know at all what Roman garum really tasted like or everything involved in its preparation, and they're not exactly wrong since Colatura di Alici can only be traced back to the middle ages, but it's also oddly obtuse. I think it was probably like modern fish sauces but Roman garum could have been as different from Colatura and Asian fish sauce as those are from Worcestershire.
Careful. What we refer to as "tomato ketchup" has been bowdlerized and degraded by being made shelf stable.
"When Every Ketchup But One Went Extinct" https://www.atlasobscura.com/articles/history-of-heinz-ketch...
Wikipedia: https://en.wikipedia.org/wiki/Shrimp_paste
Also, even if the Roman Empire had wool knitting a lot of it wouldn't have survived archaeological records (textiles rarely do, which is a shame in general, and also arguably why there is so much bias against certain types of textiles in "historical records") and it seems hard to entirely dismiss the Roman Empire from having wool knitting given the extent of the Empire and how deep the history of wool knitting in the British Isles goes, at the very least, to which the Roman Empire had contact and trading.