It is a layer of wax. This is a special packaging used to seal and preserve the cheese, maintaining its freshness. It cannot be eaten. Typically, this wax-wrapped cheese is mostly spherical in shape. This cheese is a specialty of the Dutch town of Adem near Amsterdam. Abroad, it is collectively known as "Adham cheese", and in China, it is often called "Red Wave cheese". This is because it was originally introduced to the mainland through Hong Kong, and "ball" is called "wave" in Cantonese, so this round red wax seal is also called "red wave cheese" in Hong Kong. In addition, yellow wax and blue wax or green wax seals are called "yellow wave cheese" and "basket wave cheese" respectively.

Edible wax is generally a natural secretion of animals and plants (types include beeswax, wood wax mixed with bee pollen, honey, beeswax thread, cream, red rice porridge, sugar, water), and its effects are as follows: The texture is similar to various waxes used in daily life, but due to its characteristics of natural products, it is essentially different from waxes of other chemical products. Edible wax is produced from living organisms, and its main components are carbohydrates, lipids, organic acids, etc. It can polish food and keep it fresh. When edible wax enters the human body, carbohydrates, lipids, and organic acids can be digested and absorbed by the human body. Under normal circumstances, people will not ingest a large amount of edible wax at one time, and it will not cause harm to the human body. Eating too much will overburden the body's detoxification and decomposition organs such as the liver, affecting health. In addition: Even if edible wax enters the human body, it cannot be digested.