Jiaozi red line: red bean paste and jujube paste.

The blue line of zongzi: yolk

Jiaozi Yellow Line: Alkaline water.

But there is no clear regulation, and the color is determined according to your own preferences.

The special cotton thread for zongzi dressing is the cotton thread specially used for zongzi dressing. There are many kinds of zongzi, including big meat zongzi, medium meat zongzi, small meat zongzi, red bean paste zongzi, dried vegetable zongzi and egg yolk zongzi. If only one color or several colors of thread are used, it is difficult to distinguish the types of zongzi products, so in order to meet the market demand, a kind of cotton thread specially used for zongzi binding is produced, which can also be called zongzi binding thread.

Extended data:

Matters needing attention in binding zongzi thread:

There are many natural materials for wrapping zongzi, such as rice straw, cotton rope or hemp rope. We should use natural materials as far as possible to make leaves and ropes, so as to eat zongzi safely and safely.

In recent years, some people have tied zongzi with nylon and plastic ropes for convenience, regardless of the requirements of the Food Hygiene Law. Nylon rope, also known as polyester vinyl rope, will produce substances harmful to human health after boiling at high temperature, such as dimethyl methane and other toxins.

Toxins will penetrate into boiled water and zongzi, and people will be poisoned if they eat zongzi contaminated with toxins. Plastic rope is generally made of polypropylene PP plastic and polyethylene pe material. We call it PP plastic rope, binding rope, or pe plastic rope.