This morning I did a run - 60L MacRum on 4 plates.
All went OK got the expected yield (around 6L @ 100% from 6L @ 10.5%).
Usually all the SGs clear whilst the foreshots are being taken off, then all stay clear until the onset of tails. I usually use the first bit of fogging on SG one as the first indication of tails.
This time the bottom SG had water droplets / fogging from beginning to end.
The only difference between this run and previous runs is a complete strip down and clean up of copper etc. But did a steam run prior to the rum and all clamps were checked for leaks.
An ideas as to what causes this ?