Umami: The Fifth Taste and How to Harness It in Cooking

Among the five fundamental tastes recognized by modern food science — sweet, sour, salty, bitter, and umami — umami is the youngest and least understood by most home cooks. Yet it may be the most important taste for creating deeply satisfying, craveable food. Understanding umami and learning to use it intentionally is one of the highest-leverage skills a cook can develop.

The Discovery of Umami

Japanese professor Kikunae Ikeda identified umami in 1908 while studying the unique savory quality of kombu seaweed broth. He determined that glutamate — a naturally occurring amino acid — was responsible for this flavor, and isolated it in the form of monosodium glutamate (MSG). While MSG has been unfairly stigmatized in Western food culture, glutamate itself is found naturally in enormous quantities in everyday ingredients: a ripe tomato, aged Parmesan, a spoonful of soy sauce. The glutamate in MSG is chemically identical to the glutamate in these foods, and the body handles them in exactly the same way.

Later research identified two ribonucleotides — inosinate (found in fish and meat) and guanylate (found in dried mushrooms) — that also trigger umami receptors and, crucially, synergize with glutamate to produce umami sensations far more powerful than either compound alone.

Identifying Umami-Rich Ingredients

Building an instinct for which ingredients carry high umami allows you to deliberately layer depth into your cooking. Anchovies, miso paste, fish sauce, soy sauce, Worcestershire sauce, and oyster sauce are concentrated liquid or paste-form umami bombs. Aged cheeses, particularly Parmigiano-Reggiano (which has some of the highest glutamate concentrations of any food), add umami as both a seasoning and an ingredient. Dried and cooked tomatoes, especially tomato paste, contain far more glutamate than fresh tomatoes. Dried shiitake and porcini mushrooms are extraordinarily umami-rich due to high guanylate concentrations.

Understanding these ingredients as umami sources — rather than just flavor ingredients — changes how you use them. A small amount of tomato paste sweated in oil at the start of a braise is not just adding tomato flavor; it is building an umami foundation for the entire dish. Two anchovy fillets melted into the base of a lamb ragu are not making the dish taste like fish; they are amplifying its savory depth.

Practical Umami Techniques

Start soups and sauces with an umami-rich fond: cook your aromatics with tomato paste, or deglaze with soy sauce or fish sauce. Finish pasta sauces with a grating of Parmesan directly into the sauce rather than just on top — the cheese melts and integrates, distributing umami throughout the dish. Add a Parmesan rind to any long-cooked sauce or stew; it dissolves slowly and enriches the entire liquid.

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MSG: The Misunderstood Umami Tool

Monosodium glutamate (MSG) deserves rehabilitation in the home kitchen. The popular belief that MSG causes headaches and other symptoms — dubbed "Chinese Restaurant Syndrome" when first described in the late 1960s — has been repeatedly investigated in controlled double-blind studies and consistently not confirmed. Well-conducted research has found no reliable difference in symptom rates between people who consume MSG and those who consume a placebo, even among self-identified MSG-sensitive individuals. The stigma attached to MSG is not supported by evidence and has unfairly disadvantaged a highly effective, naturally-derived flavor tool.

Used in small quantities (a quarter teaspoon per serving of soup or sauce), MSG provides pure umami enhancement without the additional flavors that come from soy sauce or fish sauce. It is particularly useful in applications where you want the umami effect without any saltiness beyond what the dish already has — MSG's sodium content per unit of umami effect is much lower than table salt's. Professional food scientists have used MSG as a standard tool for decades; informed home cooks are increasingly comfortable adding it to their pantry alongside salt and pepper. See more on our blog.