The drink mixing is cool, I just wish the order UI wasn't so little and pushed away in a corner.
At first I was stuck because I couldn't lift the glass from the drink machine. But eventually I figured out I had to click on the square at the bottom. But I think it would be better if you could just click on the glass. A tutorial and making the controls as easy as possible would do wonders, I think.
I really like how you drew the mouse :)