I love this. I wish it was sitting in front of me now, I can already taste it.
Composition and exposure great.
Sharpness quite poor, and yet I bet in the original image it is quite sharp. The top of the glass and the little "thingys" sticking up must look sharp.
When you reduce to 600px you must sharpen the image to maintain the same look as the original. If not it looks out of focus like this seems to. The file is also only 22kb and this does not help, even 600px should be at least 60 or 70 kb 100 or so is better, to maintain the detail.
Here is your image sharpened with unsharp mask in photoshop. If you did this with your original image after resizing and save at around 1oo to 120kb you would have a lovely sharp image.