The best water temperature for brewing coffee is between 200 to 205 degrees fahrenheitt.
212 degrees fahrenheit- boiling water will over extract your coffee and make it bitter. We here at Koffee Kult highly suggest you do not boil your water for brewing our coffee.
Water less that 200 degrees fahrenheit will not extract the coffee properly either. The sweet spot for us at Koffee Kult is 203 deg. F