The characters on Su-style moon cakes are directly printed by seals. After the required characters are engraved, food pigments are used as inkpad. After the moon cakes are made, they are printed and baked.

Jiangsu, Zhejiang and Shanghai are the production areas of Suzhou-style moon cakes, and the traditional authentic skills are kept in Suzhou. The basic contents of this technology include: material selection, primary processing, stuffing wiping, skin making, pastry making, pastry wrapping, stuffing wrapping, molding, stamping, baking and packaging. There are no molds in the production process, and the instruments used are relatively simple, such as scraper, glossy paper, baking tray, charcoal-based Chinese fir box and so on.

The inscription on Su-style moon cakes is completed by stamping, and colorful characters or patterns are printed on the moon cakes with food pigments as inkpad, which makes the moon cakes more vivid and beautiful.

Extended information:

Su-style moon cakes are the essence of Su-style moon cakes, with crisp skin, beautiful color, rich but not greasy stuffing and crisp taste.

Mid-Autumn Festival culture has a great influence on Chinese people. "Reunion, happiness, sweetness, unity and harmony" has become the connotation and theme of Mid-Autumn Festival culture, and moon cakes have become the carrier of this cultural connotation and theme. As one of the two types of moon cakes in China, Soviet-style moon cakes have a far-reaching impact on China's diet and folk culture.

The custom of eating moon cakes in Mid-Autumn Festival began in the Tang Dynasty. It was popular in the court in the Northern Song Dynasty and later spread to the people. At that time, it was commonly known as "small cake" and "moon group". In the Ming Dynasty, it became a common dietary custom of the whole people and was loved by people all over China.

It is said that the reason why we eat moon cakes in the Mid-Autumn Festival is that Chang 'e missed her husband very much when she arrived at the Moon Palace, and Hou Yi missed her day and night, hoping to see her again.

One day, an immortal showed Hou Yi the way: on the full moon night of August 15th, make balls out of flour, and put them in the northwest of the house, and then call Chang 'e's name continuously. At midnight, Chang 'e can go home for reunion. Hou Yi did as he did, so he saw Chang 'e flying from the moon, and the husband and wife were reunited.

The round balls made of this flour later evolved into various kinds of moon cakes.

Reference: Baidu Encyclopedia-Suzhou Mooncakes