Sriracha (Thai: ซอสศรีราชา) (pronounced /siːrətʃə/ or see-rah-chah) is the generic name for a hot sauce from Thailand. It is named after the seaside city of Si Racha, where it was first produced as a local product (currently licensed by "Sriracha Panich"). It is made from sun-ripened chili peppers, vinegar, garlic, sugar and salt. It averages a Scoville rating of 2,000.[citation needed]
The U.S. brand from Huy Fong Foods is often left out on the table at restaurants all day and contains sodium bisulfite as a preservative. Thai people often find the American brand perplexing, as Sriracha was originally and is still often thought of as unique brand from that town, not a type of sauce. Thai grocery stores carry the authentic Thai version, which usually has no preservatives and is refrigerated after opening. Huy Fong Foods has trademarked the name "Sriracha" in the United States, preventing any importers from using the same name, including those under license from the originator of the sauce "Sriracha Panich".