Oyster sauce salt, should be added to the sauce, since the oysters should provide all the savoury flavour. However, this method is prohibitively expensive. Many modern oyster sauces are thickened with cornstarch, flavoured with oyster essence or extract and darkened with caramel. Vegetarian oyster sauce prepared from mushrooms, often oyster mushrooms or shiitake mushrooms, is also popular and generally lower in price. It may contain more taste enhancers if less mushroom extract is used to reduce costs. Most of the oyster sauces available on the market contain added monosodium glutamate (MSG). In recent years MSG-free varieties can also be found. The taste
Portobello Power Station Portobello Power Station Portobello Power Station was a coal-fired power station in Portobello, Edinburgh which was built in 1923 by the Edinburgh Corporation in order to cope with the increasing demand for electricity in the city. Although originally intended to be built in 1913, its construction was delayed because of the First World War, and it was formally opened by George V ten years later. Its electricity was used to power Edinburgh and the surrounding region while waste heat warmed the water of Portobello Open Air Pool. In 1938 the design of the station was extended by Edinburgh architect Ebenezer