Beerbelly's bitch :)
- Reaction score
1 packet is underpitching, regardless, for this type of yeast. Pitch rates for 34/70 is 1g/L, ie 23g (2packs) for a 23 L batch. As per the fermentis data sheets.1 packet at 10 degrees would have the yeast pushing itself a bit to start.
2 packets if pitching dry yeast cold and 1 packet if pitching warm seems to work best.