Lava Lamp: Wheat, Barley, or Wax Ale?

I was fixing up my "office" in the house today... And the black cap from my lava lamp fell off the top.

I discovered underneath a bottle cap holds the liquid in, and it got me to thinking: Am I supposed to drink the 14-year-old liquid inside?

Should I heat it up first? I mean, the wax does need to be melty in order for me to guzzle, right?

And then it said it, right on the lid "Do Not Ingest".

Oh. Mystery solved.