Usually water, but no tap water thanks. My preference goes to Evian or Volvic.
Espresso,
not the ones you get in a bar that are either too light or burnt with no crema at all. I mean the Italian Espresso you'd get in Roma, Venice, Florence, Capri from an average Barista. First time you try, you even wonder wether it is coffee you're drinking.
No sugar into such a nectar. I'm currently thinking of acquiring the tools and knowledge to try and have similar espressi at home. It just costs a lot of money and time for something that seems so simple (but is in fact very tricky)
Other than that, light teas with aerian aromas. Mint (light ones), citrus and the like aromas.
Some herbal teas, I like some of the ayurvedic types. Not that I'm into the culture behind, only
I like the taste and feeling. It so happens we have a nice brand having lots of types based in France.
No soft drinks, thanks. After like 5 to 10 years without approaching it, I recently had a small glass of coke and it is incredible how sugary and thick it felt. So much I wondered how I was able to drink that as a kid.
At some point, I liked Schweppes for its bitterness, but too much sugar for me now.
No alcohol, never felt affinity with such beverages, regardless of prices/hype and culture associated.