Introduction to Monosodium Glutamate (MSG) Monosodium glutamate (MSG) is a popular flavor enhancer used worldwide, particularly in Asian cuisine. Known for intensifying umami – the fifth taste – it is praised for its ability to enhance the flavor profile of many dishes. Ajinomoto, a leading manufacturer of MSG, offers this product in various sizes, including the 1 kg package, which is ideal for frequent use in both private and commercial kitchens. What is MSG? MSG is a salt derived from glutamic acid, a naturally occurring amino acid found in many foods such as tomatoes, cheese, and mushrooms.