Every professional or just your average but enthusiastic rookie-barista longs to create the reliably magical cup of espresso. But this requires the right coffee recipe - the precise amount of coffee, its coarseness, how long the water is allowed to flow through, how much of it, and last but not lease- the precise volume of coffee that you can serve up once this whole process is over.
This handy measuring cup from the British brand Rhinowares is a perfect tool for exactly this. The lines on the wall let you see the exact volume of espresso you are brewing, and it can be used to measure the speed of water flow through your portafilter to ensure your coffee will be delicious time after time.