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
Stephen Decatur Button 1961, architectural historian Winston Weisman labeled this style "Philadelphia Functionalism," and conjectured that it may have influenced the skyscrapers of architect Louis Sullivan. Sullivan worked next-door at 243 Chestnut Street in 1874, while a draftsman in the offices of architects Frank Furness & George W. Hewitt. In addition to this modernist work, Button designed in the Romanesque and Italianate styles. About 1854, he moved across the Delaware River to Camden, New Jersey, where he would live for the rest of his life. His house at 330 Mickle Street was next door to that of the poet Walt Whitman. Button received