I looked into this a while back and can't remember what I decided. There is debate about whether or not duval use a primary or secondary yeast for bottle conditioning. I like the idea of reclaiming yeast a lot but the only time i have tried it I ended up throwing the beer away.
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has anyone got a tried and tested reciepe for Duvel, i've had a search on the internet and some say use saaz only and others have saaz and styrian goldings