Espresso I'm having an insomnia as a result of taking a single shot of espresso just a few hours before sleep. I had never tried it before, so it was quite an experience. My first impression was how little coffee I was served. I seriously thought the barista made a mistake or two :)) I'm not sure about the acidity but it was bitter than the normal black coffee. To my surprise, I enjoyed it more than the black one. Was it because the high concentration of caffeine knocked me out of my seat or was it because there was a ladyfinger accompanied it? I may never know. Anyhow, the experience reminds me that it's almost always good to plunge yourself into the unknown and see things for yourself.