What is oyster sauce? How to use in English

At that time, oyster cultivation in Hong Kong had become a significant industry, and oyster farming became a source of income for many coastal villages. The demand for oyster-based dishes grew, and a new sauce made from oyster extracts and soy sauce was invented as a way to preserve the oysters for longer periods. The sauce became popular in Cantonese restaurants and spread to other Chinese communities in Southeast Asia, where it was adopted and adapted to local tastes. The composition of the sauce evolved to include various seasonings, such as garlic, ginger, and sugar, and became a staple ingredient in the cuisine of countries like Singapore, Malaysia, and West Malaysia. In short, the word "oyster sauce" originated in Hong Kong in the late 19th century, as a result of the popularity of oyster-based dishes and the need to preserve oysters for longer periods by turning them into a flavorful sauce. The sauce then became a local delicacy and gained popularity in neighboring countries as a versatile ingredient in Asian cuisine.