My latest sour brew:
4 lbs 2-Row
1.5 lbs Vienna
2 lbs White Wheat
Sach Trois, WY5112 Brett Brux from starters
12 drops of Brutzyme (amyloglucosidase, a-amylase, pullulanase and other dextrinases)
1 Swanson pill Lacto P. starter (1g/L chalk) 0.2L pitched at 24hr (50% AA)
Started at 67°F, rise 1°F/day until 72°F
5.7 gallon batch size (after starter pitches)
One issue, the first 20 hours (40% AA) of fermentation had no pressure relief so ester production may be suppressed. Sample taken after 7 days - 1.000 with a PH of 3.72. It seems the lacto P. does not reach terminal sourness with this method/organisms/temperature (neither good nor bad). I decided to add 0.5 lbs/gallon of frozen (pasteurized) raspberries which kicked the gravity up maybe 1.5 points. This fermentation took off. Note my graph does not display the -0.002 calibration offset for my Tilt. I'll see how things go, but I may keg this as early as day 14. Also, I am planning on adding 1oz of Hallertau Blanc hop tea at some point.