My favorite drink at work lately is hot green tea, and I make
the perfect cup by brewing the tea bags and then adding any
blend of citrus juices (primarily lemon, lime, and a dash of
orange and sometimes grapefruit), a bit of honey, and a vial
or two of ginseng extract.

The caffeine and ginseng keep me going all night long and it
is so delicious. I doubt I'm enough of a connosieur to tell
the difference between different varieties of green tea,
though I did notice it with "white" green tea, which makes a
good blend with the regular green tea bag.

Green Tea: 4g
Water: 600g
Juice: 35g
Honey 3g
Ginseng: 10g

Cost: $0.50 to $0.75 per 20oz cup