Do watermelons and lobster sauce have to be dried?

No need. Watermelon douchi is a traditional food production method in China. Watermelon seeds need to be soaked and dried, then steamed or fermented with lobster sauce, and finally made into seasoning. Sunbathing is a traditional way to make watermelon douchi, which can help remove water from watermelon seeds, promote the fermentation of douchi and prevent mold growth. In the process of modern food processing, basking in the sun is not a necessary step to make watermelon douchi. Modern factories usually use more advanced methods and equipment, such as mechanical drying or oven, to control temperature and humidity and ensure the safety and quality of food.