Library
Master Cho’s books, the University of Hawaiʻi papers, and every recording.
Looking for something someone said? Search inside every Office Hours episode →
Master Cho’s books
3 books
Members borrow these books and read them in the browser. Become a member — pay-what-you-can, from $60 a year. Already one? Sign in.
University of Hawaiʻi papers
Grouped, with context →Free to everyone. The recipes Hawaiʻi farmers wrote with UH, and the lab studies that followed.
New recordings
All 236 videos →
How the library works
🔓 Free to everyone
The University of Hawaiʻi papers, the Hilo meeting recordings, every Office Hours episode with searchable transcripts, and the history.
📚 Members borrow books
Borrow a copy, read it in your browser on any device, and return it for the next grower. If every copy is out, join the waitlist and we’ll email you.
💬 Stuck? Ask
Can’t find it, or found it and still have questions? Ask the community or bring it to a meeting.
Not sure where to begin? Three reading paths
New to KNF? Start here
Three stops that take you from “what is this?” to your first jar.
- PageStart Here: the nine solutions Plain-language tour of the nine homemade inputs, with a recipe for each.
- VideosThe Hilo nine-solution series One solution a month, taught live in Hilo. Watch them in order.
- PaperBIO-9 · How to Cultivate Indigenous Microorganisms The first University of Hawaiʻi guide to catching indigenous microorganisms. Free PDF.
Master Cho in his own words
The founder’s own English books, and the story of where he learned it all.
- BookCho Han Kyu's Natural Farming (Janong Book)Members One of Master Cho’s best English publications. Members can borrow it.
- BookCho's Natural Farming Recipes and Instructions for UseMembers The recipe book: how to make each input, step by step. Members can borrow it.
- PageHistory & Lineage His three teachers, sixty years of work, and how it came to Hawaiʻi.
The science
What farmers wrote down, and what the University of Hawaiʻi found when it looked closer.
- PaperSA-7 · Natural Farming: Fermented Plant Juice Fermented Plant Juice, written by Hawaiʻi farmers with UH extension. The first of six.
- PaperSA-12 · Natural Farming: Fish Amino Acids Fish Amino Acids. First author: Drake Weinert, before Pure KNF began.
- PaperSA-22 · Natural Farming: Bacteria in 10 Sources of Indigenous Micro-Organisms (IMO4) from Natural Farming Operators in Hawaiʿi Which bacteria live in IMO-4 from ten Hawaiʻi farms.