Tea. Sencha is my favorite, though I'd drink matcha if it didn't cost so incredibly much. Most of my fluid intake during a day is tea.
Catnip tea. It has a really unique and special flavor. If made using all of the plant (flowers, stem, and leaves) it tastes sweet and floral, with a gentle bitterness. I drink it every few days.
Sake is the only alcoholic I drink. It is the only alcohol I've genuinely liked, and by nature do I love it. Though I never drink more than a small glass of it, and never more frequent than once a week.