Umami
旨味/oo-MAH-mee/
The savory "fifth taste" — matcha's defining flavor note.
Umami is the savory, broth-like flavor that defines high-grade matcha. The same taste as dashi, aged cheese, or ripe tomatoes, umami in matcha comes primarily from amino acids — particularly L-theanine, which the shading process amplifies. Matcha's signature creamy mouthfeel and its sweet finish without sugar are both downstream of umami. Lower-grade matcha has less umami and more grassy, vegetal notes.
In practice
- The fifth basic taste alongside sweet, salt, sour and bitter — savoury depth, the quality of stock, parmesan or ripe tomato.
- In matcha it presents as a broth-like weight that coats the mouth and lingers after swallowing.
- It comes chiefly from amino acids concentrated by shading, L-theanine most of all. More shade means more umami.
- It is the clearest tasting distinction between grades: strong ceremonial matcha is savoury and full, while culinary grade is thin and mostly bitter.
The common mistake
Reading it as a flaw. First-time drinkers often describe good matcha as tasting 'like seaweed' or 'like soup' and assume something has gone wrong. That savouriness is the quality marker — its absence is the problem, not its presence.
