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, Edinburgh Agency (SEPA) classified the quality of the swimming water as "poor" (Portobello West) and “sufficient” (Portobello Central) in its 2017 and 2018 surveys. Despite this, sightings of dolphins off the coast in 2018 suggests water quality had improved. A wild swimmers' club that has been braving the waves throughout the year since 2010, also suggests this, meanwhile a warmer alternative is provided by the Turkish Baths in Portobello Swim Centre. In October 2016, Portobello became the first urban community in Scotland to register a Community Right to Buy after the 2016 expansion of Land reform in Scotland to cover urban