Oh, the dried yeast sometimes fails for me as well. Sometimes partially but not completely, in which case I add two packets (even though one should be enough as

Oh, the dried yeast sometimes fails for me as well. Sometimes partially but not completely, in which case I add two packets (even though one should be enough as per instructions). But I don't feel like paying for mystery yeast. I found a brand of fresh yeast which never failed for me, and it's worth keeping in the fridge.