noun
freshly brewed green tea
Dated term, originally used in restaurants. Now mostly replaced by お茶 or 煎茶 in everyday speech.
See also: あがり
昔の料亭では、食後に上がり花が出された。
In old-style restaurants, freshly brewed green tea was served after the meal.
General term for tea, especially green tea. 上がり花 is a dated, restaurant-specific term for freshly brewed green tea.
Compound of 上がり (agari, 'finish' or 'after a meal', from the verb 上がる) and 花 (hana, 'flower'), here used as a beautifying suffix. The exact derivation is uncertain, but it likely referred to the tea served as the 'final flower' of a meal in traditional restaurants.