Q&A for How to Ferment Beans

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  • Question
    How long is the fermenting process?
    Japjit Mahl
    Community Answer
    Three to five days.
  • Question
    What happens to the protein in the bean during the fermentation?
    Community Answer
    Very little happens. Bacteria break down the starches (sugar chains) and use them as food. They prefer sugars over proteins as they lack sufficient enzyme activity to digest proteins.
  • Question
    During the fermentation stage, do the beans need to be covered by liquid?
    Community Answer
    Yes, they need to have limited oxygen to allow fermentation. This won't happen if they are mostly dry and exposed to air.
  • Question
    My black beans have developed some white mold on top. What should I do?
    Community Answer
    This does happen, but you can just use a spoon to scoop the mold off. Mold can be toxic and taste pretty terrible, but luckily, it only grows near the surface.
  • Question
    When using kefir, which I make regularly, do I have to add the kefir grains to the beans?
    Community Answer
    No. You do not add the kefir grains, only the whey (yellow liquid from strained kefir through a coffee filter).
  • Question
    Can I use a non-dairy culture instead of dairy?
    Community Answer
    Sauerkraut is sometimes made with whey to get it to ferment faster, but non-dairy sauerkraut is also quite common. In either case, the juice from sauerkraut will work for fermenting beans, as long as it has no preservatives.
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