If you are interested in perfecting your espresso making skills and technique, you need to understand the science behind it. The science behind espresso brewing is called extraction.
I’ve heard different opinions on oily coffee beans throughout my love affair with coffee. Some people love their beans to look oily, some never buy beans that have oil on them, but most people couldn’t tell me why they didn’t like the oily beans. There is sometimes a negative association with a shiny coffee bean, … Read more