Doppelbock 4 way tasting experiment

The 4 beers that were tasted. From left "no yeast/no O2", "no yeast/O2", "yeast/ no O2" "yeast/O2". The picture was taken during the foam stability test. The two samples on the right were poured 1 min after the samples on the left were poured.

The 4 beers that were tasted. From left “no yeast/no O2”, “no yeast/O2”, “yeast/ no O2” “yeast/O2”. The picture was taken during the foam stability test. The two samples on the right were poured 1 min after the samples on the left were poured.

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