What Is It?

I have been looking at this for a few weeks now and thought this could be a blip. If you can't figure it out, here is your Clue.

Caution Tech Stuff: This picture was lit with a single small LED flashlight in the back center just below the neck. There wasn't much light coming around the glass so it needed a full 30 seconds. I looks like it was side lighted but all the light came from a tiny spot on the back of the jar...