Coffee wins without even thinking about it.
I come into work a half an hour early so there is coffee for everyone at work. I usually drink at least two cups of coffee a day while working. I always make coffee the same way, and this is how:
one filter with 5 scoops of coffee
a full pot of cold water (Mr. Coffee coffeemaker, 12 cups)
For my cup of coffee, I usually put two packets of sugar with splash of creamer.