The Fifth Basic Taste, Umami
Umami is the fifth basic taste, discovered in 1908 and later confirmed by science. Here is what it is, how it works, and why it makes food taste deeper.
In addition to the classic tastes of sweet, salty, sour, and bitter, umami is recognized as the fifth basic taste. People have started hearing about it more recently, but it is actually a very old concept. At first, I thought umami was just a trendy gastronomy word. Since I felt like I had never really tasted it, I did not fully understand what it was, and after a while I almost stopped believing it was even a real separate taste.
Then I looked into its story and realized it was much older than I thought. In 1908, Japanese scientist Kikunae Ikeda was drinking a broth made with kombu and noticed a strong, lingering taste that did not match the other known tastes. It was not sweet, salty, sour, or bitter. It was something else entirely. He started researching it and found that the source of this taste in the broth was glutamic acid (glutamate). He isolated the compound responsible for that taste and named it “umami.” In Japanese, it roughly means something like “pleasant taste” or “delicious taste.”
Kikunae Ikeda
And he did not stop there. In 1909, he produced monosodium glutamate (MSG) and introduced it to the market. This is the same ingredient that became widely known in the food industry and especially in Asian cuisine, often referred to as “Chinese salt” in everyday talk.
For a long time, umami was not taken very seriously in scientific circles either. People treated it like a questionable idea and asked whether it was really a separate taste at all. But in the 2000s, when scientists discovered taste receptors on the human tongue that specifically respond to glutamate, the issue became official. Since then, umami has been accepted as the fifth basic taste.
What I find most interesting about umami is this: it is not an aggressive taste that dominates everything on its own. It is more like a depth-giving taste that stays in the mouth and settles on the palate. You can feel it clearly in broth, dried tomatoes, parmesan cheese, mushrooms, soy sauce, fish, and seafood. When glutamate, inosinate, and guanylate come together, the umami effect becomes even stronger. That is why adding mushrooms to a meat broth can suddenly take the flavor to a completely different level.
In short, I now think of umami not just as a taste, but as the depth of flavor inside a dish.