Seeing some lovely Krausen on the brew tonight I couldn’t help but harvest some more yeast to add to yesterday’s bounty, which had settled down to a disappointingly paltry film at the bottom of its glass jar since I liberated it yesterday. Dropping the pressure briefly from 5 PSI to zero resulted in some bubbles rising to the top and also out of the dip-tube, so I can only hope the yeast and (more importantly) the Tilt Pro is happy being de- and re-pressurised so rapidly.

On refitting the spunding valve after cropping I took the opportunity to increase pressure to 10 PSI, based on positive feedback from others who have done the same with their Kveik.