Espresso is one of the most popular ways to drink coffee, but it's also the most complicated to make.
원문출처 : https://www.cnn.com/2020/01/22/us/how-to-make-brew-better-espresso-study-scn/index.html
원문출처 : https://www.cnn.com/2020/01/22/us/how-to-make-brew-better-espresso-study-scn/index.html