Some sources say to add DAP at the start of fermentation, but not at pitch due to the possibility of the yeast getting burnt by the nitrogen. It also stated to wait 12 hours (I read that as at the end of lag phase) to pitch the DAP whereas at that point the yeast could handle the nitrogen. So, if the lag phase is shortened down to a few hours how should DAP be added?
For a "new" batch I do a rehydration with Go ferm, add Fermaid K at pitch, then add DAP at end of lag. Then Fermaid K and DAP at 1/3rd. Doing daily aererations until 1/3rd, too.
What I have noticed is that when I am pitching onto a previous batches yeast cake, my lag time is down to about an hour or two and I am not sure how to add DAP. Do I still wait a few hours or add then? Or don't worry about it? Is there a big difference between "new" yeast and some that have "been around the block" a few times?
For a "new" batch I do a rehydration with Go ferm, add Fermaid K at pitch, then add DAP at end of lag. Then Fermaid K and DAP at 1/3rd. Doing daily aererations until 1/3rd, too.
What I have noticed is that when I am pitching onto a previous batches yeast cake, my lag time is down to about an hour or two and I am not sure how to add DAP. Do I still wait a few hours or add then? Or don't worry about it? Is there a big difference between "new" yeast and some that have "been around the block" a few times?