The document discusses tea as a beverage, including:
- Caffeine content varies between tea and coffee depending on origin, type, and preparation, with brewed coffee generally containing more caffeine than tea.
- Black, green, and white teas come from the same plant but differ in harvest time and oxidation level, affecting caffeine content and flavor.
- The preparation method, including steeping time and water temperature, impacts the caffeine in tea, with longer steeping producing more caffeine.