Very good close up. The highlights are a little too much. Would have been a better shot if a light difuser was used on the flash, otherwise it's rich in colors.
The color of the coffee beans is a bit too close to the color of poo.
Is this their real color or was the influence of the color of the lighting you used the reason for this?
More diffusion (a sheet in a couple of feet before the light source, or reflection (bounce the light on something big and bright) might also solve it a bit, the light is somewhat intense.
The lighting is a little "hot" for my liking. There're a lot of hotspots created by the direct lighting. To fix this you might want to diffuse the light onto the coffee more.
The lighting aside, I like the rhythm and texture in this shot, I would have perhaps chosen a more extreme angle and got a slightly shallower DOF to put the focus on a particular coffee bean and imply said rhythm and texture as opposed to making it more of a focal point like you have here.
A nice idea, but some technical points let you down a little. Hope my comment helps :)
The lighting is very harsh, something a little more subdued (maybe a softbox or some diffuser) would have helped.
The colors also make it feel very flat.