The Dual Boiler’s tank will hold a generous capacity of two and a half litres of cold water ready to be heated for brewing, and there’s also a cup warming function to avoid your coffee cooling too quickly. As you might expect, you’ll also be able to froth your milk as desired, so this isn’t by any means limited to ‘pure’ espresso lovers. There’s programmable settings to use via the control panel, a function sadly lacking in most machines, yet a near essential here due to the sheer enormity in the range of configurations you could achieve with this maker.