Olive Oil Aeration plus Rant

[Sent From My iPhone]

Thanks for sharing that with us Urbain, that's awesome to hear. Can you tell us how much you add?

[Urbain @ Struise]

As we brew batches between 30 & 60 hl, I prefer doing the conversion to an example wich you probably use most of the time.

The basic idea is to use +- 5 billion cells of pure yeast, 0,1 mg linoleic acid, 10 mg cholesterol for 1 liter of beer to ferment.

If I would use an activator package from Wyeast, wich contains a minimum of 100 billion cells, and enough to innoculate 19lt (5gallons) of beer, I would add 1.9mg of olive oil and 190 mg of cholesterol to the smack pack.

In other words you would add 1 mg of olive oil and 100 mg of cholesterol for every 52.6 billion cells of pure yeast and this to your smack pack or sterile storage container, 5 hours prior to use.

Cheers, Urbain

[joques]

Urbain, this is great information! I have two questions:

Do you continuously stir the slurry after adding the oil, to distribute it evenly? Or do the yeast take care of that themselves? It seems to me that a magnetic stirplate would come in handy.

Also: In which form do you add cholesterol? Can you just go and buy pure cholesterol?

[Urbain @ Struise]

I would not use the stir plate, it tends to tear down Krausen.

I would use some apple juice at the same volume as your activatorpack. Warm the juice up to 25° C or 77°F. Add the olive oil to the applejuice, shake that well. Add the cholesterol (dried egg yolk, you can easy buy it online), shake that well again then add your yeast. Be sure to work very sterile, extremely very sterile...

[joques]

Egg yolk, ok!

How about pasteurizing it, would that harm anything?

[Urbain @ Struise]

Why pasteurize, it is already when you buy it.

See link : http://www.naturesflavors.com/product_i ... ts_id/4355

[dragonhlm]

Thanks for all of the information Urbain. Just what I was looking for.
I hope this helps everyone interested.
I'm sure millage may vary, so please all interested in trying it post your results.

[Keggerator]

I just got the May-June BYO. The article about Olive Oil Aeration was a good read!