Oyster sauce is a viscous dark brown sauce commonly
used in Chinese, Filipino and
Thai cuisine. It is especially common in Cantonese cuisine.
Origin
Oyster sauce is prepared from oysters, brine, umami flavour enhancers such as MSG,
and typically contains preservatives to increase its shelf life. The sauce was invented in
1888 by Mr. Lee Kam Sheung, in Nam Shui Village in Guangdong
Province, China.[1] His company, Lee Kum Kee, continues to produce oyster
sauce, to this day, along with a wide variety of Asian condiments.
Production
A "true" oyster sauce of good quality should be made by condensing oyster extracts, which is made by cooking oysters in water
until a white broth is produced. The opaque broth is then cooked until a desired viscosity has
been reached and the liquid has caramelized to a brown colour.[1] No other additives, not even salt, should be added to the sauce,
since the oysters should provide all the savory flavour. Most oyster sauces are actually diluted solutions thickened with
starch,preservatives and caramel, with oyster extracts. In some countries, including the UK, the
oyster content in some sauces is lower than its Asian counterparts of the same brand due to laws
regulating the import of seafood.
Varieties
Vegetarian oyster sauce
Vegetarian oyster sauce prepared from mushrooms, often oyster mushrooms, is also popular and generally cheaper. It may contain more taste enhancers if less mushroom extract is used to reduce costs.
Non MSG
Most of the oyster sauces available on the market contain added monosodium
glutamate (MSG). Though in recent years MSG-free varieties can also be found.[2] The taste of MSG and non-MSG variants is similar.
Use
Oyster sauce is used to enhance the flavour of many savory foods. It is also often used as a topping for steamed vegetables,
and in stir-fries.
Dishes for which oyster sauce is commonly used include:
References
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