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Sweet Potato Leaves + Brown Sugar = Food (FPJ) in a Week

Kim Chang, Not stated (she says she makes plant juice to order for farmers) · USA (Hawaiʻi)

Kim Chang makes a jar of Food (FPJ) from sweet potato leaves on the lawn at Komohana, layering the leaves with an equal weight of brown sugar, capping with sugar, covering with paper and dating it October 1, 2015. She explains which plants to pick and when, how to deal with mold, why the bottle must not be sealed tight, and shows finished jars made from young noni fruit and from fruit for the flowering and fruiting stages.

What they found

The question

How do you make Food (FPJ) at home, and which plants and timing make a good batch?

How they tested it

Plants: vigorous, fast-growing ones you 'cannot kill' and that bugs rarely attack; she names sweet potato (leaves and vine tips, used in the jar shown), watercress and mugwort. Harvest: early morning while the dew is still on; do not wash the leaves (washing removes the microbes); do not pick right after rain, wait 'maybe one day'. Use plants with a good smell, never bad-smelling ones. Cut: about two inches. Amounts: about 2 pounds of leaves in a half-gallon jar when she was a beginner; a one-gallon jar once you are 'doing good'. Leaves were not weighed on camera. Sugar: equal amount of brown sugar to material; 'more sugar is better than less sugar'. Steps: toss leaves with brown sugar in a bowl so they wilt, then pack into a glass jar in layers (leaves, a little sugar, press down, more leaves), filling all the way up; osmotic pressure pulls the juice out and the pile settles. Cap with extra sugar on top. Cover: breathable paper, tied tight (an onlooker suggested a physical-therapy exercise band) so bugs can't get in. Label: what it is and the date, in red pen ('October 1st 2015, fermented plant juice, sweet potato'). Fermentation: one week, 'do not skip one week'; it turns into a very mild alcohol. Mold: thin sugar lets mold grow on top; add more sugar right away; remove green mold, white mold can stay. Day 7 (October 7): pour off the liquid; the leftover leaves can go into mulch. Storage: bottle the juice but never close the lid tight, the gas can make it explode. Storage place and shelf life: not stated. Dilution and how often to apply: not stated.

What was compared
  • Sweet potato leaf Food (FPJ) — Made on camera; general-purpose plant juice. Dilution not stated.
  • Young noni fruit Food (FPJ) — Finished jar shown; from green, young noni fruit, for the flowering stage. Dilution not stated.
  • Flower Food (FPJ) — Flowers, e.g. banana flower, for the flowering stage (described, not made).
  • Fruit juice (bottle labeled FFJ, July 23, 15) — Same method, equal brown sugar; fruit possibly jaboticaba or a mix, she forgot to write it down. Given when fruit starts to change color, green to yellow.
  • Type 3 mixture — For the fruiting stage; she lists brown (rice vinegar, unclear), OHN, fermented plant juice, water and calcium. Amounts not stated.
Results
  1. Liquid starts coming out of the leaves within minutes of mixing with sugar

    A jar she packed minutes earlier had already settled and had liquid at the bottom

    ▶ 2:35 Said and shown on the slides

  2. Ferment for one week

    Jar started October 1 is to be strained October 7

    ▶ 6:11 As spoken

  3. Too little sugar invites mold

    Add sugar on top as soon as mold shows; remove green mold, white mold can stay

    ▶ 6:57 As spoken

  4. A tightly closed bottle can explode

    Gas keeps coming off the juice; she says it happened to her

    ▶ 10:14 As spoken

  5. Young fruit and flower juices are for the flowering stage

    Shown with a young noni FPJ bottle; banana flower named

    ▶ 10:52 Said and shown on the slides

Hold it loosely
  • A hands-on demonstration, not a trial; no results on crops are shown.
  • Material and sugar were not weighed on camera; amounts are her rough figures (about 2 pounds per half-gallon jar).
  • No dilution rate or spray schedule was given for any of the juices.
  • The opening is cut off; the recording starts mid-sentence about fruit juice.
  • The Type 3 ingredient list is partly unclear in both transcripts, and no amounts were given.
For your farm
  • Pick the fastest-growing, healthiest plants you have, at dawn with the dew on, and don't wash them.
  • Use about an equal weight of brown sugar; if in doubt use more, and cap the jar with sugar.
  • Cover with breathable paper tied tight, and label every jar with plant and date.
  • Give it a full week, then pour off the juice; the leftover leaves can go into mulch.
  • Never screw the bottle lid down tight; the juice keeps giving off gas.

Next to Master Cho's teaching

  • Agrees

    Vigorous plants: sweet potato vine, mugwort, watercress Cho names mugwort and dropwort (watercress-like) as model plants and lists sweet potato vine among plants whose growing points grow fast and carry strong growth hormone.

    Cho, Cho Han-Kyu's Natural Farming (Theory), p. 69

  • Agrees

    Harvest at dawn with dew, don't wash, not after rain Cho says collect just before sunrise, dew adds volume, and don't wash because it removes lactic acid bacteria and yeast. He advises waiting 2–3 days after rain; Kim said 'maybe one day', which is shorter than Cho's wait.

    Cho, Natural Farming Agricultural Materials (Recipe), p. 34

  • Agrees

    Equal brown sugar, sugar on top, about a week Cho's recipe is material and brown sugar 1:1 by weight, enough sugar to cover the top, covered with paper, completed in 5–7 days. Kim's one week sits at the long end of that range.

    Cho, Cho Han-Kyu's Natural Farming (Theory), p. 72–73

  • Differs

    Pack the jar all the way to the top Cho fills the jar to 2/3 and leaves 1/3 for water, air and heat, using a stone so the volume settles to two thirds. Kim packs the jar full and lets it settle on its own, without a weight; leaving headroom is the safer habit.

    Fermented-Plant-JuiceFPJ, p. 1–7

  • Agrees

    Young fruit Food (FPJ) for flowering Cho uses FPJ from baby fruits (with false acacia flower) to support floral differentiation and the changeover period, the same idea as Kim's young noni and banana flower juices.

    Cho, Janong Natural Farming (2010 draft), p. 67

“Like a sweet potato, you cannot kill this sweet potato.”

▶ 0:16

“Do not skip one week.”

▶ 6:17

“More sugar is better than less sugar.”

▶ 6:57

“If you close the lid tight, the gas keep coming out, it's going to explode. Really. I'm not kidding, it happened to me.”

▶ 10:21

In this talk

  1. 0:00Pick vigorous plants: sweet potato, watercress, mugwort
  2. 1:03Plants that bugs leave alone
  3. 1:16Equal brown sugar; cut to about two inches
  4. 1:33A caterpillar in the leaves
  5. 1:56Jar size and how much material
  6. 2:23Layer sugar and leaves; the juice comes out
  7. 3:55Harvest at dawn, don't wash, not after rain
  8. 5:05Use plants that smell good
  9. 5:30Pack the jar full; it settles
  10. 6:11Ferment one full week
  11. 6:57More sugar, not less: dealing with mold
  12. 8:10A batch made about a week ago
  13. 8:36Sugar cap, paper cover, exercise band
  14. 9:34Label and date the jar
  15. 10:02Strain on day 7; never seal the bottle
  16. 10:42Young noni and flowers for the flowering stage
  17. 11:23Fruit juice for when fruit changes color
  18. 12:03Type 3 mixture for the fruiting stage

Transcript

Transcribed and checked by hand against the recording. Click any time to play from there.