DIY bokashi bran

A bokashi kitchen composting system is a really good way of transforming kitchen waste into nutrient-rich soil conditioner. It will deal with almost all kitchen food waste including cooked and uncooked meats and fish, dairy products and cooked leftovers which can’t be added to a normal composting system. (See Bokashi composting )

Bokashi bran

bokashi branBokashi bran, a dry mixture of bran, molasses and micro-organisms, is mixed in with the food scraps in a sealable container which can be kept in the kitchen. Once full, the mix is left for 2 weeks to ferment, then the contents are added to a normal compost bin or wormery, or dug into a hole in the ground and buried. The fermented matter breaks down very quickly into rich compost.

Bokashi bran is normally purchased ready-made. The initial cost of purchasing the bins, plus the ongoing cost of the bokashi bran sometimes puts people off using what is otherwise a really good system. (see * Evengreener –bokashi bins and bokashi bran or Amazon )

However, it is possible to purchase the EM-1 Effective Micro-Organisms and make the bran mixture yourself at home for less (see *Amazon – EM-1 (500ml) and Wheatbran)

There are various recipes for bokashi bran on the web, but most work with large quantities and aren’t suitable for normal home use. This is a very simple and easy recipe for a small batch of EM bokashi bran, enough to supply an average home for about a month. The recipe is very easy to scale up if you want to make a few month’s supply.


Mix one tablespoon (15ml) of molasses into 250ml of warm water, then add one tablespoon (15ml) of EM-1. Pour the mixture into 500g of wheat bran and mix very thoroughly. The bran will expand as it absorbs the water.

When it’s well mixed, seal it up in an airtight container and leave in a warm, dark place for about 2-3 weeks.

VERY IMPORTANTdon’t open it up at all for at least two weeks, not even to have a quick peep, or the process won’t work!

When the time is up, the bran should smell fermented and there may be some white mould on the surface, which is a good sign. The mixture is now ready to use, but keeps better if it’s well dried. Spread out on a tray away from direct sunlight until completely dry then store in a cool dry place. The bran should remain active for at least a year.

Other uses for bokashi bran

Many people give bokashi bran to their chickens to reduce the acidity of their droppings and keep their digestive systems healthy. The bran is sprinkled on the droppings below their perches, and also fed at a rate of 3-5% of the weight of their feed.

Bokashi bran is also said to be a good feed supplement for horses. Apparently about 100g per day can improve digestion, re-balance the gut flora and boost the immune system.

If you would like more information about the bokashi system see also our posts on Bokashi composting DIY bokashi bins, and Bokashi troubleshooting.

A useful book is *Bokashi Composting: Scraps to Soil in Weeks by Adam Footer.

* Please note: some of the links above (marked *) are affiliate links meaning at no additional cost to you turning2green will earn a small commission if you click through and make a purchase. This helps us to maintain the site and we thank you for your support.

Last updated

2 thoughts on “DIY bokashi bran”

  1. Hi Sheila. We suggest you let it dry out completely in a big paper bag or a cardboard box or spread out on a tray away from sunlight, then you can seal it up in a plastic bag or box and keep somewhere cool and dry. Hope that helps 🙂

  2. Sheila Brown

    My bran has got damp and lumpy. I initially had it in its own bag – as supplied. After I found it damp I changed it into a plastic container with a locking lid. It stlll got. Have you any advice please.

Leave a Comment

Your email address will not be published. Required fields are marked *

This blog is kept spam free by WP-SpamFree.