Folks,
I am still working on a solution for my head retention issue!
Here are the things I have tried based on feedback and googling:
Splashing wort from cube to fermenter damaging head forming proteins:
I have fermented in the cube with no improvement on head retention.
Dirty glasses:
I have been cleaning all my glasses throughly by hand.
I then run water inside the glass and watch how it clings to the glass surface.
Apparently an even layer of water being held on the surface of the glass confirms no fatty residue.
This has made a slight improvement to lacing but no improvement on head retention.
Rinsing thoroughly after cleaning with PBW:
It was suggested that a layer may be building up over time affecting head.
I have increased the volume of hot water I use when rinsing on all equipment after cleaning with PBW.
I use the hottest water I can get out of my tap and then follow with a starsan rinse.
I am starting to run out of things to try now.
However, I have noticed that when I take a hydro sample of my wort I get a great head retention in the test jar.
When I take another sample post fermentation I get little to no foam despite CO2 in solution.
Could it be my fermentation profile causing these issues?
I brew mostly ales with temp control in fridges at 18.5c - 19.5c.
I set the temp control at 19 with 0.5c margin.
Once I have hit my FG, which is usally 1009 - 1011 I crash the wort.
This is usually after 5-7 days.
Should I be leaving in primamy a little longer?
Is there something happening that isn't affecting gravity but helping with head retention properties?
I have been brewing the same ales over and over and changing one thing at a time to troubleshoot.
One thing I can say is I do get good consistency brew to brew!
Any ideas folks?
Thanks again!