Vat 2: Fermentation Process Log

July 2, Day 4

11:00 Mixed by Madlen. PH 12.92, 13.37 after mixing (measured with old PH meter), vat temp 27.6

20:00 PH 12.37, vat temp 30. Very sharp ammonia smell. When mixed, it makes bubbles but it disappears quite quickly. I also see some wax floating (which probably came out from the surface of the wooden barrel) so I scoop it out with a spoon and removed it.


July 1, Day 3:

9:00 PH 12.7, very thick and can not really mix. I see some activities, though PH is not dropping as for the first days. Very strong sharp ammonia smell.

Then I prepared the holzfass/wood barrel that was filled with water over night. It seems to not leak water at all. It was emptied and I painted 20g lime mixed with water to the surface. This is to prevent bacteria on the wood surface to interfere with the vat bacteria. Then I migrated the vat we started on Sunday in a bucket to the holzfass using small pot (~2L?) to scoop out from the bucket and slowly releasing to the holzfass. Then I added 50 degrees ash water that I newly made this morning. It was ~PH11. Maybe 10L of it went into the fass. After everything, I mixed it and PH was 12.1, Vat temp was up to 38.

20:00 mixed by Sarah, PH 12.56 (with new PH meter), vat temp 33.9


June 30, Day 2:

17:00 PH 12.66, very thick, I can not really mix it, although I did 30 x 30 x 30 moves