Originally Posted by jrfehon
I have a Flemish Red going now in the primary with Wyeast Roeselare 3763 and I'm probably going to rerack it from the plastic bucket into a glass carboy in a week when it finishes primary fermentation. I've never tried reusing yeast cakes but I want to. Is it okay to reuse a Roeselare yeast cake after two weeks in the primary or should I wait longer to rerack into the glass carboy so I can reuse the cake?
I think if you re-use the cake after only a couple of weeks it is going to be mostly sacc. The bugs will be there, but the sacc will dominate. Reusing the cake will result in a rapid ferment and a slow souring of the next beer.
Reusing the cake after 6 months will have lots of bugs and only a little sacc. This will result in a quicker souring.
If you want to use this cake, I recommend pouring half of it into the glass carboy with the beer and only use half of it for the next beer. That way, you leave food for the Brett, and will have a good cake to use in 6 months.