So. I stuck some Soylent in a bottle to chill before heading to a party yesterday. Forgot to grab it before I left. Come home, opened the bottle to this:
The bottle was vertical in the freezer the entire time. Not lying on its side, not angled or moved in any way. The anomaly does not line up with any opening on the lid. I’m sure there is some kind of scientific fluid-freezing-dynamic explanation for this. Or, @rob has engineered life.