{"id":947,"date":"2025-07-16T19:03:06","date_gmt":"2025-07-16T19:03:06","guid":{"rendered":"https:\/\/nerding.at\/circular_blue\/?p=947"},"modified":"2025-07-20T20:22:59","modified_gmt":"2025-07-20T20:22:59","slug":"vat-2-fermentation-process-log","status":"publish","type":"post","link":"https:\/\/nerding.at\/circular_blue\/vat-2-fermentation-process-log\/","title":{"rendered":"Vat 2: Fermentation Process Log"},"content":{"rendered":"\n

July 20 Day 22<\/h2>\n\n\n\n

20:00 Mixed by Joel: before mix temp 26, PH 10.25, after mix, temp 25.2, PH 10.12, room temp 27<\/p>\n\n\n\n

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July 19 Day 21<\/h2>\n\n\n\n

Mika is away for the next 3 weeks and Madlen is in charge of the vat.<\/p>\n\n\n\n

Late afternoon: Room temperature 31, ph 10.5 before mixing, 10.8 after mixing. Vat temperature 23.4. Vat2 smells better than vat 1.<\/p>\n\n\n\n

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July 18, Day 20<\/h2>\n\n\n\n

17:00 No more wax or wood pieces on the surface but I see another “something” on the surface. I think it is the bubbles from the last day. PH is 10.79 vat temperature 20.7. The photo looks a bit strange, but there are no color on color test. After mixing, PH goes up to 11. <\/p>\n\n\n\n

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July 17, Day 19<\/h2>\n\n\n\n

10:00 Surface is flat with some wood\/wax pieces. I removed them with shieb. PH 11.05 before mixing, 11.2 after. Temp 17.5. It seems like vat is too cold. I forgot to bring a blanket. no color on color test.<\/p>\n\n\n\n

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July 15, Day 17<\/h2>\n\n\n\n

19:30 mixed by Madlen: Less floating material and definitely mroe bubbles. The 2nd photo is after 5-10 min after mixing.<\/p>\n\n\n\n

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July 14, Day 16<\/h2>\n\n\n\n

17:30. The floating things are gone and surface is flat this time. PH is 11.95 before mixing. finally under 12. As Vat1 had a drastic drop and change (see the vat 1 doc) we decided to add warm water (PH 7.8) into the vat. We cooked with electric kettle for 2L of hot water, mixed with room temp water and made 7L of warm (~45 degrees) water. This was slowly added to the vat. Right after adding, PH was 11.5 but when we mixed the vat, it went up to 11.8. not sure if this had a big impact. We did not mix very hard this time either. Just a gentle mix.<\/p>\n\n\n\n

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July 13, Day 15<\/h2>\n\n\n\n

16:30 Room temp 24, PH 12.03 before mixing, 12.16 after. temp 20. a lot of floating things. no color on color test. no smell.<\/p>\n\n\n\n

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July 11, Day 13<\/h2>\n\n\n\n

11:00 PH 12.22 temperature 18.6. no color on the color test. Again, there are a lot of things floating on the surface. Maybe this is left over wheat bran?? PH stays high, not much smell.<\/p>\n\n\n\n

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July 10, Day 12<\/h2>\n\n\n\n

9:30 PH 12.26, vat temperate 19. no color on the color test. It looked like the baby vomited last night. A lot of floating things. I made a color check, and maybe it shows a slight hit of blue?! Some ammonia smell.<\/p>\n\n\n\n

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19:50 mixed by Madlen. She says “in real life it does not seem blue to me… but nice chocolaty bubbly \ud83d\ude42<\/p>\n\n\n\n

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July 9, Day 11<\/h2>\n\n\n\n

9:00 Room temperature 18, vat temperature 18.6, PH 12.37. there is a lot of brown things floating on the surface. Unlike other days the surface does not look flat. Smells ammonia when mixing.<\/p>\n\n\n\n

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18:30 mixed by Joel<\/p>\n\n\n\n

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July 8, Day 10<\/h2>\n\n\n\n

9:00 PH 12.28, vat temperature 20, room temperature 18. A lot of bubbles are staying after mixing. it resembles early state o the vat (when it is going good).. so I guess it is a good sign?<\/p>\n\n\n\n

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20:00 mixed by Madlen<\/p>\n\n\n\n

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July 7, Day 9<\/h2>\n\n\n\n

10:00 wax again. I hope this is the last bits in this vat. PH 12.22, after mixing 12.24. seems not changing much.<\/p>\n\n\n\n

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20:00 after the strong thunder storm. Madlen is there to mix. “Younger Sibling, also felt like more bubbles but small ones. The other one(vat) has bigger eyes”<\/p>\n\n\n\n

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July 6, Day 8<\/h2>\n\n\n\n

10:30 Again the wax chunks are floating. It always gathers in one spot. I wonder if something is moving them?? PH 12.33 before mixing, 12.3 after mixing. <\/p>\n\n\n\n

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July 5, Day 7<\/h2>\n\n\n\n

10:30 PH 12.3, temp 24, A lot of dust like thing on the surface and chunks of wax is floating. I removed the wax chunks with a spoon.<\/p>\n\n\n\n

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July 4, Day 6<\/h2>\n\n\n\n

11:00 PH 12.5, temp 23.7<\/p>\n\n\n\n

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Like the vat 1, I replace ~10L of vat water with ash water. The ash water I added is ph 10.3, 50 degrees. It looked like it lowered it, but after mixing, it is back to 12.23.<\/p>\n\n\n\n

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19:00 no PH check. Sarah and I mixed the vat, then we fed them with wheat bran. 50g of wheat bran porridge per vat. After that we closed the lid and said “Guten Nacht” to the vats. <\/p>\n\n\n\n

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July 3, Day 5<\/h2>\n\n\n\n

9:00 Room temp 24, PH 12.44, vat temp 25.7. It is very dark to check the surface so I used the flash light… and it looks strange. It has a lot of small particles floating on the surface. Maybe it is the kinako particle? not sure. <\/p>\n\n\n\n

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20:00 mixed by Madlen<\/p>\n\n\n\n

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July 2, Day 4<\/h2>\n\n\n\n

11:00 Mixed by Madlen. PH 12.92, 13.37 after mixing (measured with old PH meter), vat temp 27.6<\/p>\n\n\n\n

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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.<\/p>\n\n\n\n

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July 1, Day 3:<\/h2>\n\n\n\n

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. <\/p>\n\n\n\n

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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. <\/p>\n\n\n\n

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20:00 mixed by Sarah, PH 12.56 (with new PH meter), vat temp 33.9<\/p>\n\n\n\n

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June 30, Day 2:<\/h2>\n\n\n\n

17:00 PH 12.66, very thick, I can not really mix it, although I did 30 x 30 x 30 moves<\/p>\n\n\n\n

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July 20 Day 22 20:00 Mixed by Joel: before mix temp 26, PH 10.25, after mix, temp 25.2, PH 10.12, room temp 27 July 19 Day 21 Mika is away for the next 3 weeks and Madlen is in charge of the vat. Late afternoon: Room temperature 31, ph 10.5 before mixing, 10.8 after mixing.… Read More »Vat 2: Fermentation Process Log<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":951,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_en_post_content":"\n

July 20 Day 22<\/h2>\n\n\n\n

20:00 Mixed by Joel: before mix temp 26, PH 10.25, after mix, temp 25.2, PH 10.12, room temp 27<\/p>\n\n\n\n

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July 19 Day 21<\/h2>\n\n\n\n

Mika is away for the next 3 weeks and Madlen is in charge of the vat.<\/p>\n\n\n\n

Late afternoon: Room temperature 31, ph 10.5 before mixing, 10.8 after mixing. Vat temperature 23.4. Vat2 smells better than vat 1.<\/p>\n\n\n\n

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July 18, Day 20<\/h2>\n\n\n\n

17:00 No more wax or wood pieces on the surface but I see another \"something\" on the surface. I think it is the bubbles from the last day. PH is 10.79 vat temperature 20.7. The photo looks a bit strange, but there are no color on color test. After mixing, PH goes up to 11. <\/p>\n\n\n\n

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July 17, Day 19<\/h2>\n\n\n\n

10:00 Surface is flat with some wood\/wax pieces. I removed them with shieb. PH 11.05 before mixing, 11.2 after. Temp 17.5. It seems like vat is too cold. I forgot to bring a blanket. no color on color test.<\/p>\n\n\n\n

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July 15, Day 17<\/h2>\n\n\n\n

19:30 mixed by Madlen: Less floating material and definitely mroe bubbles. The 2nd photo is after 5-10 min after mixing.<\/p>\n\n\n\n

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July 14, Day 16<\/h2>\n\n\n\n

17:30. The floating things are gone and surface is flat this time. PH is 11.95 before mixing. finally under 12. As Vat1 had a drastic drop and change (see the vat 1 doc) we decided to add warm water (PH 7.8) into the vat. We cooked with electric kettle for 2L of hot water, mixed with room temp water and made 7L of warm (~45 degrees) water. This was slowly added to the vat. Right after adding, PH was 11.5 but when we mixed the vat, it went up to 11.8. not sure if this had a big impact. We did not mix very hard this time either. Just a gentle mix.<\/p>\n\n\n\n

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July 13, Day 15<\/h2>\n\n\n\n

16:30 Room temp 24, PH 12.03 before mixing, 12.16 after. temp 20. a lot of floating things. no color on color test. no smell.<\/p>\n\n\n\n

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July 11, Day 13<\/h2>\n\n\n\n

11:00 PH 12.22 temperature 18.6. no color on the color test. Again, there are a lot of things floating on the surface. Maybe this is left over wheat bran?? PH stays high, not much smell.<\/p>\n\n\n\n

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July 10, Day 12<\/h2>\n\n\n\n

9:30 PH 12.26, vat temperate 19. no color on the color test. It looked like the baby vomited last night. A lot of floating things. I made a color check, and maybe it shows a slight hit of blue?! Some ammonia smell.<\/p>\n\n\n\n

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19:50 mixed by Madlen. She says \"in real life it does not seem blue to me... but nice chocolaty bubbly :)<\/p>\n\n\n\n

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July 9, Day 11<\/h2>\n\n\n\n

9:00 Room temperature 18, vat temperature 18.6, PH 12.37. there is a lot of brown things floating on the surface. Unlike other days the surface does not look flat. Smells ammonia when mixing.<\/p>\n\n\n\n

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18:30 mixed by Joel<\/p>\n\n\n\n

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July 8, Day 10<\/h2>\n\n\n\n

9:00 PH 12.28, vat temperature 20, room temperature 18. A lot of bubbles are staying after mixing. it resembles early state o the vat (when it is going good).. so I guess it is a good sign?<\/p>\n\n\n\n

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20:00 mixed by Madlen<\/p>\n\n\n\n

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July 7, Day 9<\/h2>\n\n\n\n

10:00 wax again. I hope this is the last bits in this vat. PH 12.22, after mixing 12.24. seems not changing much.<\/p>\n\n\n\n

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20:00 after the strong thunder storm. Madlen is there to mix. \"Younger Sibling, also felt like more bubbles but small ones. The other one(vat) has bigger eyes\"<\/p>\n\n\n\n

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July 6, Day 8<\/h2>\n\n\n\n

10:30 Again the wax chunks are floating. It always gathers in one spot. I wonder if something is moving them?? PH 12.33 before mixing, 12.3 after mixing. <\/p>\n\n\n\n

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July 5, Day 7<\/h2>\n\n\n\n

10:30 PH 12.3, temp 24, A lot of dust like thing on the surface and chunks of wax is floating. I removed the wax chunks with a spoon.<\/p>\n\n\n\n

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July 4, Day 6<\/h2>\n\n\n\n

11:00 PH 12.5, temp 23.7<\/p>\n\n\n\n

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Like the vat 1, I replace ~10L of vat water with ash water. The ash water I added is ph 10.3, 50 degrees. It looked like it lowered it, but after mixing, it is back to 12.23.<\/p>\n\n\n\n

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19:00 no PH check. Sarah and I mixed the vat, then we fed them with wheat bran. 50g of wheat bran porridge per vat. After that we closed the lid and said \"Guten Nacht\" to the vats. <\/p>\n\n\n\n

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July 3, Day 5<\/h2>\n\n\n\n

9:00 Room temp 24, PH 12.44, vat temp 25.7. It is very dark to check the surface so I used the flash light... and it looks strange. It has a lot of small particles floating on the surface. Maybe it is the kinako particle? not sure. <\/p>\n\n\n\n

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20:00 mixed by Madlen<\/p>\n\n\n\n

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July 2, Day 4<\/h2>\n\n\n\n

11:00 Mixed by Madlen. PH 12.92, 13.37 after mixing (measured with old PH meter), vat temp 27.6<\/p>\n\n\n\n

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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.<\/p>\n\n\n\n

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July 1, Day 3:<\/h2>\n\n\n\n

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. <\/p>\n\n\n\n

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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. <\/p>\n\n\n\n

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20:00 mixed by Sarah, PH 12.56 (with new PH meter), vat temp 33.9<\/p>\n\n\n\n

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June 30, Day 2:<\/h2>\n\n\n\n

17:00 PH 12.66, very thick, I can not really mix it, although I did 30 x 30 x 30 moves<\/p>\n\n\n\n

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