The biggest improvement you can make on your coffee after a grinder : a water filter for coffee. 

The Peak Water jug is a filter dedicated for coffee. It is much more than a  conventional filter (ex : Brita). The Peak will remove foreign odours and tastes like other filters. But more importantly, it will correct the mineral content of your water back into the best settings for your cup and your equipment.

If you want to improve your cup, this is a must. 

The steps are simple : Test, Adjust and Use. 

Includes Jug, Filter, Test strips and user guide. 

Pictures : Peak Water.