" Note: 1)Too coarse a grind, too little coffee, or insufficiently tamping the grounds before brewing can all lead to inadequate pressure for a proper brew. 2)It is important to note that the amount of espresso extracted will vary depending on the grind size and amount and reprogramming may be needed when the size and amount are adjusted The Breville Infuser delivers optimal flavour in every cup creating third wave specialty coffee at home using the 4 keys formula, ensuring the right dose of beans, optimal water pressure, precise temperature control and microfoam milk for latte art VOLUMETRIC AND SHOT CONTROL: Control the volume of each pour at the touch of a button and choose 1 shot, 2 shot or manually control over how much espresso ends up in your cup for the perfect dose every time. Manual removable magnetic tamper OPTIMAL WATER PRESSURE: Low pressure pre-infusion gradually increases pressure at the start and helps ensure all the flavours are drawn out evenly during the extraction for a balanced tasting cup PRECISE ESPRESSO EXTRACTION: Maximize flavour potential with low pressure pre-infusion, digital PID temperature control, adjustable in 4 ⁰F increments complete with pressure gauge that guides you to the right extraction every time"