Save $30 on a Bonavita Coffee Maker Published by Mark December 13, 2013 10:04 pm Today only (12/14/13), receive $30 off your order of a Bonavita Thermal or Bonavita Glass. This promotion is valid on purchases made on 12/14/13 and cannot be applied to prior purchases. Categorized in: Articles 1 Comment Written by: coffee July 1, 2014 at 3:22 am Also, see to it that you follow the correct coffee beans and water proportion. Putting too much water and little coffee beans in the coffee maker will certainly yield a poor and “weak” brew. A general rule when brewing is to put 2 tablespoons of grounded coffee beans for every 6 ounces of water.