Vanilla pulp used in papermaking, in which the lignin is broken down using sulfites or sulfates. However, vanillin is only one of 171 identified aromatic components of real vanilla fruits. The orchid species "Leptotes bicolor" is used as a natural vanilla replacement in Paraguay and southern Brazil. In 1996 the US Food and Drug Administration cautioned that some vanilla products sold in Mexico were made from the cheaper tonka bean which as well as vanillin also contains the toxin coumarin. They advised consumers to always check the ingredients label and avoid suspicously cheap products. In the United States, castoreum, the exudate
American Chinese cuisine neighborhoods, under strict rabbinical supervision as a prerequisite for Kosher certification. Senator Charles Schumer from New York is frequently seen at Hunan Dynasty in Washington, D.C. Since the early 1990s, many American Chinese restaurants influenced by California cuisine have opened in the San Francisco Bay Area. The trademark dishes of American Chinese cuisine remain on the menu, but there is more emphasis on fresh vegetables, and the selection is vegetarian-friendly. This new cuisine has exotic ingredients like mangos and portobello mushrooms. Brown rice is often offered as an alternative to white rice. Some restaurants substitute grilled wheat flour tortillas for