The contrast between the edge of the glass and the black background is so strong that the camera couldn't reproduce it well, leading to the jagged edge along the left side. Not so good. You did do a good job with focus and sharpness, and I imagine exposure was tricky for this as well. The subject is very well lit.
An interesting macro study, but just not very "Wow!". Sorry.
There is a beverage, but compared to other entries, I don't find the subject interesting. The most interesting part to me is the blue edge of the liquid.