If you look at the exif of this photo on flickr you will see a low aperture and high iso and probably just overexposed it a bit. Flash produce a different effect than this. A weak light source(es) far off gives the feel and with longish exposure gives bloom; high iso lowers the dynamic range and possibly a wider aperture lens gives some blur.
Obviously the results are different because of different angles and lighting positions.
If you can get the flash off your camera and aim it from the side or get say an 18" 15w fluorescent light and move it around it will give different effects.
Playing with the ratio of ambient lighting and flash power vs exposure time/aperture will then be factored in too.
All in all, theres a bunch of parameters to fiddle with on the camera, lighting sources, strengths, positions and diffusion and you'd probably spend hours in front of a little cup before you get a similar shot but then in the process discover a zillion new shots in between all that.