In sushi shops, “Agari” is a word used for the same hot green tea that everywhere else is called “Sencha.”
Originally, the shops served Agari after the meal, but now it is served whenever the customer wishes during the meal.
Language Notes
Agari is that word that doesn’t actually mean tea, and that has many meanings, but one of the meanings is “finish”, and that’s where it came to have this sense of the tea that was served at the end.