1 bundle of fresh mint
1 chunk of ginger (3-5cm to taste)
2 limes or lemons
1 and 1/2 litre water
honey to taste
Chop the ginger and lime/lemon up into suitable pieces. Leave the skin on if you've got a good blender (e.g. BlendTec or VitaMix).
Blend everything but the honey. Sieve through a cheese cloth. Rinse the blender jug and put the liquid back into it along with the honey and some ice cubes. Mix for a few seconds, then pour into glasses and enjoy!