Oleg ZhuK Posted about 1 month ago Why does a fast food sandwich taste exactly the same 365 days a year? Fastfood is always delicious, and you want to eat more and more cause of one of amino acids, called glutamate. Glutamate is typical bioactive organic molecule, which is absolutely safe. And our tongue has a special receptor for this amino acid, like receptors to bitter and salty and so on. Even wikipedia tells us: China-based Fufeng Group Limited is the largest producer of glutamic acid in the world, with capacity increasing to 300,000 tons at the end of 2006 from 180,000 tons during 2006, putting them at 25%–30% of the Chinese market. Meihua is the second-largest Chinese producer. Together, the top-five producers have roughly 50% share in China. Chinese demand is roughly 1.1 million tons per year, while global demand, including China, is 1.7 million tons per year. So, now you know, why does a fast food sandwitch taste so delicious.