What is the service where people eat food in particular order?

There isn't a specific service or term that describes eating food in a particular order. However, there are a few related concepts you might be thinking of:

* Tasting menus: These are multi-course meals where the chef chooses the dishes and the order they are served. While not always strictly about order, there is a deliberate progression of flavors and textures.

* Food pairing: This refers to the art of combining different foods to create a harmonious taste experience. While not a "service" per se, understanding food pairing can help you choose the order you eat your food.

* Dietary restrictions: Certain diets, like the Mediterranean diet or the DASH diet, encourage specific food choices and may influence the order in which you eat them.

* Cultural practices: Different cultures have their own traditions about the order in which food is served and eaten. For example, in some cultures, it is considered polite to eat the rice first, followed by the main dish.

If you can provide more details about the specific order you're interested in, I might be able to provide a more accurate answer.