Glass bottles or jar-like containers.

It is best to use a glass bottle or a jar, so that it is less likely to react. Do not use plastic products. Plastic products are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Polyethylene and polypropylene are non-toxic and odorless materials, and are safe for the human body when used to fill drinks. However, once polyethylene is exposed to high temperature or acidic corrosion, it will slowly dissolve and release organic solvents, which will cause harm to the human body. Therefore, plastic bottles cannot be used to hold vinegar essence.

Synthetic vinegar is commonly known as vinegar essence. Its main component is acetic acid (acetic acid), which is diluted with edible glacial acetic acid. Acetic acid has a strong sour smell because it contains a high concentration of acetic acid, so it should be diluted when used; generally, the acetic acid content cannot exceed 3-4%.