Yeast free beer

[WhizardHat]

Controversial title?

I'm in the planning stages for a beer with a friend of mine. His wife has been having some health problems as of late, and as a result can't consume barley, rice or yeast. Problematic if you like beer. Personally, I wouldn't know what to do with myself. It's not a gluten issue, I don't think, because she can have wheat and several other types of grain.

Anyway, I have a plan to make a sorghum wheat beer and try to approximate a Shock Top/Blue Moon style.

I intend to use Irish moss in the boil, 2 stage fermentation, possibly gelatin finings, and ultimately filter the beer. The beer will be force carbed in a keg and bottled via homemade beer gun.

My question is two-fold: Do I really need to filter if I use gelatin finings and 2 stage fermentation?

If I do need to filter, what is the dirt-cheapest way to do so effectively? Will a brita work? How big in microns are yeast cells?

 

[eastoak]

beer filtering is a pretty simple process, various vendors sell the kits online.

 

[abrix]

My understanding is that you will need a 1-micron filter to catch the yeasties, but you will of course lose some flavor in the process. I would skip the finings.

If this yeast sensitivity is really serious, I trust you will be taking the filtering process equally seriously.

 

[daksin]

You will definitely still need to filter after fining. I would probably do a secondary, then gelatin in a keg and cold crash, and then filter between kegs. You will probably need to do multiple passes (first with a coarser filter, and then a polish filter to totally remove the yeast). Fining first will keep your flow rate up and keep you from clogging up filters right away.

 

[Homercidal]

+1 on Daksin. I think it's worth a shot, but you should try and minimize the amount of particulate that goes to the filter by using finings/gelatin and filtering progressively. This just helps to prevent clogging issues.