Gastronomy is the "higher" art of cooking, the art of enjoying the taste of food and drink.
When preparing gourmet meals, special attention is paid to the quality of the ingredients. The quality may be freshness (so, for example, nothing from a can), but especially the origin (pasta must come from Italy, for example, the beef from a certain mountain region, the wine from the Bordeaux region or rather just from that chateau, because it combines so well with the prepared food). Everything to make the taste optimal.
Preparing food in this way means that restaurants that prepare food in this way are extra expensive. Most restaurants work with flavor profiles. They adjust the wine with food so that you can taste both the food and the drink.