Napoleon Dynamite FFA scene - What is in the third milk jar

Scene from the 88 minute test screening of Napoleon Dynamite, dated 10/16/2003. I found a random burned DVD of this in the basement physics lab while I was an undergraduate, and have treasured it ever since. There are a number of differences from the officially released film, which I have aspirations of one day cataloging. For now, here is the FFA scene with Napoleon and Pedro. The most notable difference is we learn what is in the third mason jar of milk.
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Napoleon: "Delicious, it's fine, it's just good old fashioned whole milk."
Judge: "Correct again, you're in first place."
Napoleon: "Yesssss!"