The Collaborative International Dictionary
Aristology \Ar`is*tol"o*gy\, n. [Gr. ? dinner + -logy.]
The science of dining.
--Quart. Rev.
Douglas Harper's Etymology Dictionary
"science of dining," 1835, from Greek ariston "breakfast" (see ere; so called from being the early meal of the day) + -ology. Related: Aristological.
Wikipedia
Aristology is the art or science of cooking and dining. It encompasses the preparation, combination, and presentation of dishes and the manner in which these dishes are integrated into a meal.
An Aristologist is someone who studies or takes part in the art or science of cooking and eating (dining) with particular interests and skills in the preparation, combination and presentation of food dishes, wines, spirits, flavours and tastes - coupled with tasteful and correct presentation of all the courses and components of a meal.
The term has been largely superseded by " gourmet", which is also the older word, borrowed into English in 1820.
An Aristologist is likely to place great importance on the experience, skill, and artistic integrity of the chef, and disdain the use of cookbooks, ready-made ingredients, and other conveniences.
" The Aristologist took a keen interest in the menu, and thought very hard about what red wine he was going to choose to go with his sirloin steak."