Why do nutrition products have to be labeled as national drinks?

Definition of solid beverage: a solid product with sugar, milk and dairy products, eggs or egg products, fruit juice or edible plant extracts as the main raw materials, and a proper amount of auxiliary materials or food additives, with a water content of not more than 5g per100g of finished product, is in powder form.

The nutriment you buy should be a tonic rich in protein and sugar. The edible method is an instant product which is drunk with water. The reason why nutriments are made into solid drinks is to prevent dry drinks from deteriorating or rotting due to their own enzymes or microorganisms, which is convenient for preservation; Second, it is convenient for storage and transportation.

As far as definition is concerned, all instant powdered or granular nutriments, mainly sugar and protein, can basically be called solid drinks.