as a famous cultural city with a long history, Yangzhou has a rich and varied food culture. Catering bosses in Yangzhou usually go to the following markets to purchase ingredients:

1. Yangzhou market: The local market in Yangzhou is an important place for catering bosses to purchase ingredients. There are many stalls specializing in aquatic products, vegetables, fruits and pasta in Yangzhou market, which can meet the needs of catering industry conveniently and quickly.

2. Yangzhou farmers' market: Yangzhou farmers' market is an important place for wholesale and retail of agricultural products, and it is also the main choice for catering owners to buy fresh agricultural products. Here, they can buy fruits, vegetables, meat, eggs and other agricultural products in the season.

3. Yangzhou night market: The night market is a traditional feature of Yangzhou, and it is also a choice for catering bosses to purchase ingredients. There are various stalls in the night market, which provide a rich supply of delicious food and fresh ingredients for the catering industry.

in a word, when choosing to purchase ingredients, Yangzhou catering bosses can purchase the required ingredients in Yangzhou market, farmers' market and night market according to their own needs and business characteristics. These are some common markets. Of course, there may be other small markets or wholesale centers for them to choose from.