Grinding too coarsely, too little coffee, or not compacting the beans sufficiently before brewing can lead to insufficient pressure to obtain a suitable drink. 2) It is important to note that the amount of espresso extracted will vary depending on the size and quantity of grinding and reprogramming may be required when adjusting the size and quantity Mr. Coffee 5-cup coffee maker makes up to 25 ounces of coffee - ideal for two 12-ounce cups; easy switch with power indicator lights to show the coffee machine on or to remind you to close it Great compact design for small spaces;