The Science Of Making Great Coffee Bring your coffee making skills to the most precise level with accurate measurement. Scales help eliminate a variable when extracting espresso, ensuring consistent results every time - and making troubleshooting espresso issues much easier. Whether you're an absolute beginner or a seasoned barista, the convenience of having these high precision scales & timer will help transform your coffee-making into an exact science. Simply place your portafilter onto your scales, tare/zero them, then reweigh after grinding to ensure you have the correct amount of coffee grounds. These are also great to use as general kitchen scales! 3kg/0.1g Coffee Scale With Timer & Removable Rubber Mat How Much Coffee Should I Use For Making Espresso? It depends which size basket you have, what your specific machine suggests, and what coffee you're using but generally single shots require around 7-9g of ground coffee, whereas doubles require around 14-20g. We recommend asking your roaster what their optimum recipe is.