1. Source of ingredients: observe the main ingredients used in dishes, such as vegetables, fruits, meat, seafood, etc. Vegetarian dishes are mainly plant-based ingredients, such as vegetables, fruits and bean products. Meat dishes are mainly animal ingredients, such as meat, fish, shrimp and crab.
2. Name of the dish: There will be some hints about the name of the dish. For example, "braised pork" and "hot and sour fish" refer to meat dishes, while "Mapo tofu" and "stir-fry" are vegetarian dishes.
3. Method of making: Observe the method of making dishes. Some cooking methods such as stewing, roasting and frying are used to make meat dishes, while stir-frying, mixing and cold salad are used to make vegetarian dishes.
4. Appearance of dishes: meat dishes are bright in color and delicate in meat quality, while vegetarian dishes are mainly light-colored vegetables.