BRV substitute
I was wondering if substituting BRV with ACV is ok? And if it is are the dilution ratios the same ? I’m going to make my own vinegar but need something to use right now until it’s done brewing.
Top answer
yes ACV is fine if u r using it in a spray solution i do advice getting a live vinegar but its not necessary if u r making WCA or WCAP use a pasteurized vinegar u can even use white vin in WCA & WCAP ....all ratios r the same
From the KNF library
From the KNF library
Drafted by Claude from Office Hours and the books
·
Sep 2026
·
7 sources
Drake says to use apple cider vinegar in place of brown rice vinegar. A living ACV is even better. (Office Hours Ep. 40, 53:01) Any living fruit vinegar works, and ACV counts. (Office Hours Ep. 17, 14:15)
The library gives BRV ratios and none specific to ACV. Start from the BRV numbers:
- General rate: 1 to 500. (Office Hours Ep. 102, 1:02:00)
- Sanitizing: 1:500 on juvenile leaves, 1:200 to 1:300 on adult leaves. (Office Hours Ep. 66, 1:08:33)
Master Cho's ratios changed over time and in translation. Treat them as guidelines. (Office Hours Ep. 74, 21:17)
If your own batch grows mold on top, that is normal. (Office Hours Mar 2023, 8:36) Stop BRV before harvest, because it lowers sugar content. (Office Hours Ep. 66, 1:11:43)
Sources
- 14:15 Office Hours Ep. 17 (Feb 2022) — Biochar Activation, Fish for FAA, and Fruit Sweetness Formula · “Yes, any living fruit vinegar works; ACV counts, same as the bananas Master Cho suggested”
- 8:36 Office Hours (Mar 2023) — Mold on Top of a Fermenting BRV (Brown Rice Vinegar) · “mold formed on top during fermentation, is that normal? A: Yes, that's normal”
- 1:11:43 Office Hours Ep. 66 (Feb 2023) — Brown Rice Vinegar Cleanser, Moldy Vinegar Fix, Latvia KNF Delivery · “Stop before harvest - BRV lowers sugar content, so it's left out of the harvest formula.”
- 1:08:33 Office Hours Ep. 66 (Feb 2023) — Brown Rice Vinegar Cleanser, Moldy Vinegar Fix, Latvia KNF Delivery · “Use 1:500 on juvenile leaves and 1:200 to 1:300 on adult leaves for sanitizing.”
- 21:17 Office Hours Ep. 74 (May 2023) — Bacterial Wilt on Kale, Gator Sprayer Setup, IMO Ammonia Fix · “treat the ratios and formulas as guidelines, not fixed law”
- 53:01 Office Hours Ep. 40 (Jul 2022) — Soil Compaction, Seawater Drench, IMO3 Microscope · “Use apple cider vinegar in place of brown rice vinegars. Produce it yourself. You only get even a living vinegar, which is even better, and go for it.”
- 1:02:00 Office Hours Ep. 102 (Nov 2023) — SIMO, PIMO, AIMO: New IMO Names, Moisture Ratios, Box Material · “Brown rice vinegar is 1 to 500.”
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