I have been reading cookbook from 1767. And mostly you get ingredients and probably not all of them. And sometimes you get amounts. And useful instructions like boil so many times... I have understood that with those really old recipes, the person recording them might at best have been in the same room. But probably was not a chef.
> I have understood that with those really old recipes, the person recording them might at best have been in the same room. But probably was not a chef.
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.
Old recipes are more memory cues for experienced cooks than the modern step-by-step guide for amateurs we are used to. They're scanty in detail because they assume quite a lot of existing knowledge.
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..."