espresso machine (OPV) Over pressure valve is used to regulate the brewing pressure in an espresso machine and prevent overextraction of the coffee opv is an important component in the brewing system of an espresso machine and it needs to be set correctly to help you achieve the best quality espresso. What is an OPV … Read more
There is indeed a difference in quality for your espressos and crema when it comes down to whether or not you use a 15 BAR Espresso Machine or a 20 BAR Espresso Machine. While using a 15 BAR Espresso Machine is great, it’ll leave you on the lower end of the 7 to 11 bar … Read more
Pre-infusion is letting water into the coffee puck at a low pressure between 1 and 2 bars , which is typical for a water boiler. After some time, you pull down on the lever, and extract the coffee. How do you do pre-infusion espresso? Pre-infusion is letting water into the coffee puck at a low … Read more