I have discovered the secret ingredient of Pesto sauce.

Farts. Yes, farts. Compressed, liquified, freeze dried, and ground up into a coarse paste. Hence the green color.

This is a direct observation discovery. The human digestive system adds digestive juices to the sauce and reconstitutes the farts. Apparently, they use predominantly the farts of water buffalo with digestive dieseases.

I say “human” with the disclaimer that I’m speaking of “mine”. Make of it what you will.