brudgers
[I understand the desire to have scientific knowledge and there are good resources in other comments.]

without explaining why those rules exist.

The explanation is that the rules make it taste good (or how it should taste or safe to eat or nutritious or in keeping with divine directives etc.).

Tasting good etc. is the reason for the recipe (and what tastes good etc. is literally a matter of taste or culture). Here scientific theory is post hoc. People cooked by many rules long before the coining of “bio-science.”

cpach
I’m thinking maybe the five volumes of Modernist Cuisine by Nathan Myhrvold et al would fit this bill. Haven’t read it myself but it seems very interesting.

https://en.m.wikipedia.org/wiki/Modernist_Cuisine

holden_nelson
On Food and Cooking by McGee. Hands down, authoritative resource.
an_aparallel
Try looking up molecular gastronomy texts. Exactly what you're looking for.
aarvi
Masala Labs: The Science of Indian Cooking by Krish Ashok.