Picture of espresso

Dear scikit-imagers For those of you who enjoy the finer beverages in life, a request. We are looking for a good photo of a shot of espresso for a Hough ellipse/circle detector. See: https://github.com/scikit-image/scikit-image/pull/641/ Since we need it to be public domain, your help in taking such a photograph would be much appreciated! Stéfan