The story behind this photo is pretty simple. Get a mug filled with coffee, set up a flash, and have a friend drop in a piece of cookie. the hardest part is timing. To get that creamy foreground/background bokeh, I shot on a Nikon 200mm at f/2.8. This is as shallow as hey get. To sync with the flash remotely, the highest I could shoot at was 1/200th, which explains the slight blurring of the liquid. I wish the liquid was a tad sharper, but for a first try, I done good.
Here are some [better] coffee splash photos that inspired mine.
No, I did not hide a flash just outside of the frame. Rather I had the flash in plain sight. Then with another photo I shot a picture of the same location but without the flash and subject. I then merged the two in photoshop erasing the flash/stand and cleaned up the shadows. Once again the image is a bit soft (downside to shooting wide open), but this is definitely a technique that I want to have another go at.
Also because my ladies were being cute, I could not help but capture this moment.