Black lemonade is a refreshing drink that gets its black color from activated charcoal. Activated charcoal has many health benefits including: preventing hangovers, whitening teeth, anti-aging, and removing toxins from the body. It works by bonding to toxins which get carried out of the body through elimination. (There is a much more scientific explanation of how this works.)
*Please note that I am not a doctor so do your homework before taking activated charcoal for yourself! It can interfere with some medications.