A blue Duralex glass with bubbly carbonated water. The image is <a href="https://en.wikipedia.org/wiki/Focus_stacking" class="extiw" title="w:Focus stacking">focus stacked</a> from six photos. Photographed in natural light from a window on a slightly overcast day.
<a href="//commons.wikimedia.org/wiki/User:W.carter" title="User:W.carter">W.carter</a>
<span class="int-own-work" lang="en">Own work</span>