green tea 
noun [mass noun]
Tea made from unfermented leaves that is pale in colour and slightly bitter in flavour, produced mainly in China and Japan. Compare with black tea.Anyway, if you're going to drink caffeine, the best form to do it in is tea, and green tea is the best....
- The green tea served at these ceremonies is usually bitter in taste.
- Over cups of green tea and bowlfuls of rice crackers, we chat in his kitchen well into the afternoon.