I mashed at around 64C, so I guess it created a good amount of simple sugars. I will leave the beer to mellow out over the next few weeks or more. I read that an overabundance of yeast in suspension can also cause bitterness. Is that true?

Regarding freezing, I never once had issues with opened frozen yeast packs.

Thanks for the reply. 1. The reason I made a starter was to make sure I didn’t underpitch and since I stupidly assumed that cell viability would be very low, I made a three stage starter. 2. I’m pretty sure there was no leak since when I pressed the lid of the fermenting bucket, water in the...

I just now looked at some more info and realised I’m an idiot. For some reason I assumed that the yeast would have a viability of only 20-30% after being kept in the freezer for a year. I most likely massively overpitched. Lesson learned, always do more research than you think you need. Can...

Hi, This is a long post but I want to give as much context and detail as possible. I pitched a three stage starter of NovaLager yeast two days ago into nearly 10 liters of 1.049 wort. Starter protocol was as follows: 1st stage - 1 liter of 1.040 wort, a pinch of DAP and swirling the flask...