Mr. Lee Kum Sheung is the inventor of oyster sauce, created when he accidentally boiled down his oyster soup into a thick sauce in 1888. Now, 132 years later, his company Lee Kum Kee continues Mr. Lee's old tradition with authentic Chinese sauces and famous flavor enhancers. Gluten-free oyster sauce is a rich and tasty all-purpose sauce made from the finest oyster extracts.