Frequently Asked Questions Why does my Philips Grind & Brew make too much coffee? The number of cups selected has no effect at all on the amount of water that is used. The Philips coffee maker always uses up all the water that is in the water tank. Controlling the amount of water The number of cups you select (2-10 cups) only determines the grinding time. By selecting the number of cups you want to brew, you determine the amount of beans the grinder has to grind. Always make sure that you fill the water tank with the correct amount of water for the number of cups that you want to brew.