Different raw materials and nutritional value. According to the query, it will be displayed on the kitchen website.

1. The main raw material of oyster sauce is oysters, while the main raw material of vegetarian oyster sauce is mushrooms. The raw materials of the two are different.

2. The nutritional value of vegetarian oyster sauce, which is made from mushrooms, is not as good as that of oyster sauce, which is high in nutritional value.