Mixed ales sour

[hole]

I had a yeast cake from a roselare blend fermentation that I desided to utilise by dumping leftover beer into. I have fed it an helles bock, a Dipa and an old amber ale. And now after a period og fermentation I need to emty another keg containing an ale fermented with brux trois.

Now what I wonder is have anyone here tried something like this? And know what to expekt.
I'm guessing litle souring since there is a rater high ibu compared to a regular sour beer.
I have not sampeled it yet, because it's still young. But I guess I shuld taste it now before adding the new beer Just to get an idea og what it migt become.

 

[Oldsock]

Good idea to taste before adding something that could clash (or be a waste)! Pediococcus is likely going to be the main souring microbe at work, it is relatively hop-tolerant, so you may get good acidity.

 

[hole]

I did taste and the taste was somewhat simple but good. But the aroma was Great, alot like the roselare sour that originaly was in the carboy. Not to bitter as I was afraid of. I desided to ad the 5 liters of the new beer as IT shuld ad some interesting depth and complexety. Could be interesting given time to sour a litle.