Quick Mill POP UP Espresso MachineThe Quick Mill POP UP is a precision engineered Italian espresso machine combining a 0. 45 litre insulated brass boiler with PID temperature control and a manual profiling valve for full command over every extraction. The brass boiler provides excellent thermal mass, handling consecutive shots with minimal recovery time between brews. A profiling valve gives you control from pre infusion to the final stage of extraction, allowing you to tailor