Meaning
昆布茶 (こぶちゃ・こんぶちゃ, Kombu-cha) is Kobu-cha / kombucha, a Japanese food (beverages, tea).
What is Kobu-cha / kombucha?
Kobu-cha (also read as kombucha ) is a traditional tea made by infusing kelp in hot water. The name may confuse Westerners that think of the fermented "kombucha" tea, which is called kōcha-kinoko (紅茶菌) in Japan.