There are three ways to say about the meals provided on the plane:
1) According to cabin class: first class, business class and economy class.
The quality and weight of food in different cabins vary greatly, and you get what you pay for.
2) Flight time
Less than 60 minutes: a snack, a cake and a box of drinks.
Less than 4 hours: a dinner.
More than 6 hours: one dinner+one dessert and cake.
Before 9: 00 a.m. and 9: 00 a.m.: one breakfast, and other time: dinner or snacks, depending on the flight time and "what dishes" and the class of the cabin.
The following is a brief introduction of economy class dinner:
Main course: You can choose fish, chicken and beef.
Rice or noodles: You can also choose.
That is, the main course and plain rice/noodles are counted as one, and potatoes, radishes and mushrooms are added. ...
Appetizers or salads
Whole Wheat Bread
dessert
Fruit: generally there is no choice, bananas and apples.
A small glass of drinking water