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 Open Air Pool Portobello Open Air Pool Portobello Open Air Pool was opened in Portobello, Edinburgh on Saturday 30 May 1936 at a cost of £90,000. Plans for an open air pool had previously been mooted by Edinburgh Town Council in 1928, 1930 and 1933, but were discounted - the main obstacles being seen as the Scottish weather and cost. The objections on the grounds of cost were silenced when it became clear that hot water could be provided for the pool by the coal-fired Portobello Power Station nearby. It was claimed that the water would be maintained at an average temperature of