I've had a Tilt hydrometer for a while now and I've started noticing that when I add my drop hop the gravity drops then slowly climbs it's way back up to a lower level than before the dry hop. Before the tilt I wouldn't have noticed as I wasn't taking samples until the batch was finished. For example my current batch hit 1.011 for two days, I added my dry hop and it dropped to 0.993 in around 24 hours. It stayed around that level for about 36 hours and then started climbing gradually. Four days later it's stabilised at 1.002. Same thing happened for the last two batches I've dry hopped. I've heard people talking about hops being diastatic, but don't see how that explains a drop and then slow climb back up, just a slow drop. Anyone know what's happening with this? Edit: i'm appreciating it (assuming it's fermentation) as the last two batches have been a bit higher than I wanted until the dry hop cleaned it up and I haven't noticed any weird flavours in the beer.