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, New Zealand primary school (Portobello School, Years 1-8), a local Playcentre (Peninsula Playcentre), the old Portobello Hotel (a pub), an art gallery and several accommodation providers, including a camping ground, bed and breakfasts and motels. A local dairy acts as the community's grocers, though most of the village's retail needs are served by Dunedin, which is easily accessed via the winding but well-surfaced Portobello Road which runs along the edge of the harbour. A more convoluted but scenic route, Highcliff Road, connects Portobello with Dunedin city centre via the ridge of the peninsula. Boating is an historical focus for Portobello. The Boating