The hint was the image was blurry because the camera focused on the wrong thing. I have zoomed, cropped, and mirrored a portion of the image to show the camera was paying attention to the espresso machine’s portafilter and not the surface of the liquid in the cup …

I had put the milk in the cup before pulling the shot of espresso and the first few drips created the latticed ripples like a spider’s web. The camera caught a the moment after a single drop had hit the surface and thus the crater.