Someone asked me a few days ago, how I made this photo. I explained and he asked me to post it on the blog for more details. So here it is.
What you need:
camera ( if possible, one where you can set ISO, aperture and shutter speed).
a cup ( I used a transparent one)
milk ( or any other liquid) and I also used coffee.
a dropper ( for the milk)
a stand
a remote for the camera ( not necessary)

Now, here starts the funny part: while holding the dropper filled with milk over the cup of coffee, try to guess when is the right moment to push the remote, in order to take the photo. Do not worry  if you take 300 photos and have just 10 of them coming out the way you want it. It is OK.
Enjoy ….