Bierdeckel Pint of Science Bubbles 24/03/202210/05/2022 by PSpitzer auf Deutsch bitte! SpottingScience is a project at the University of Graz (Austria) Do an experiment! Put a sip of your beer in a small mug.Put this on a saucer. Now sprinkle salt in the small beer glass with the salt shaker at the table. If you don’t want to do the experiment yourself, you can also watch the video: more beer mats!