Oil Futures.

"Except the vine, there is no plant which bears a fruit of as great importance as the olive." Pliny the Elder (AD 23-79).
I would agree, although I am quite partial to the humble strawberry. Vinomaker would disagree: He thinks any land planted to olive trees would be invariably better off if planted to vines.
Our neighbours have formed an olive oil cooperative and today was their olive harvest. I, for one, hope it was successful and bountiful as I enjoy the couple of bottles they give us...olive oil pairs well with wine.

One of these things is not like the other...

Whilst Vinomaker is downstairs feverishly marrying yeast to must, (well, maybe he's not that excited), I am reflecting on the attributes of different strains of yeast.  I slipped a 'red herring' into the above photo (thanks Thud).  To say, "yeast is yeast" and it all makes alcohol, is akin to saying that a dog is a dog and one can hunt as well as another.  Whilst you can make wine with bread yeast, you'll end up hunting with a Chihuahua. Different yeasts have different characteristics.  There are thousands of strains that have been identified and they all behave differently.  Some are only capable of fermenting up to 7 or 8 % alcohol.  Others will ferment to higher levels, but will also produce foul tasting compounds in the process, etc., etc.  One thing is for sure, once the must is charged with yeast, there's no turning back.
Release the hounds.