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 House possible to buy drinks on a Sunday throughout Wales if you could prove to the innkeeper that you had travelled three miles or more". And the Portobello Hotel served well as a post-practice social gathering place for shooters at the Glamorgan Artillery, as it was conveniently "the required distance". Also walkers in the countryside seeking to cross the River Ogmore would not be able to cross if the tide was in, and a Mr. Prosser from the Portobello could be relied upon to ferry across the river in "his little flat-bottomed home-made boat for a small fee." The Portobello House