What are the 7 variables of espresso?
Making great espresso is both an art and a science. It involves understanding and controlling seven key variables: coffee bean quality, grind size, dose, water quality, water temperature, pressure, and extraction time. Many coffee enthusiasts swear by the “golden ratio” of coffee to water, often cited as 1:16 — one part coffee to sixteen parts water. While this is a reliable guideline, it’s not a magic formula. Even if you measure perfectly, your coffee can still taste dull, bitter, or unbalanced.The 80/20 rule for coffee states that 20% of the brewing variables contribute to 80% of the final flavour quality. Focus on water temperature and grind size because these primary factors dictate the success of your extraction process.
What kills an espresso shot?
Woodburn-Simmonds shared his expert insights on this topic, describing a dead espresso shot as one that has been left sitting too long after being pulled, leading to the oxidation of oils and a resultant rancid taste. Again, the ideal pressure for an espresso shot is 9-bar, which produces a perfect balance of flavor and extraction. Too much more than 9-bar can result in a burnt-tasting espresso, while too less than 9-bar will produce a weak and overly bright shot.
What are the 4 enemies of espresso?
Coffee is fresh produce, and its enemies are oxygen, light, heat, and moisture. Air and moisture are the enemies of fresh espresso beans, so store them in the bag they came in or in an airtight jar.