look, smell and taste.
Look at the shape of the food and the artistic conception of the dish;
What you smell is the aroma of food. Gourmets can generally judge what ingredients are used in a dish, how the chef's skills are, and so on.
tasting is the most important step. To accurately distinguish and restore the taste of food and judge the quality of food, it requires the taste buds of gourmets to be very sensitive. Some powerful gourmets can even distinguish the tastes of well salt, rock salt, mineral salt, sea salt and compound salt.