Domakihub

Bokashi Composting: Turn Kitchen Scraps into Soil at Home

The indoor fermentation method that handles meat, dairy, and cooked food — no garden required.

Reviewed by Domakihub garden pros · 2026-06-23 · 5 min read

Most composting methods draw the line at cooked leftovers, meat, and dairy — exactly the scraps that pile up fastest in a Greek household or holiday rental kitchen. Bokashi fermentation sidesteps that limitation entirely: it works in a sealed bucket indoors, produces no foul odour when done correctly, and processes virtually any food waste in a matter of weeks. Watch the video above for a visual walkthrough of the full process, then follow the steps below to set up and run your own system.

Why Bokashi Suits Greek Homes and Rentals

Greece's urban apartment blocks and compact holiday villas rarely have room for an outdoor compost heap, and municipal food-waste collection is inconsistent across many municipalities. Bokashi fills that gap neatly: the active bucket sits under a kitchen sink or in a utility room, takes up less space than a recycling bin, and produces no methane because the process is fermentation rather than decomposition.

For holiday rental managers the appeal is operational. Guests generate a steady stream of cooked-food waste — fish, olive-oil-dressed salads, leftover moussaka — that a standard compost bin cannot accept. A bokashi system collects all of it cleanly between cleaning changeovers, and the finished pre-compost can go into terrace planters or be handed off to a neighbouring garden.

How Bokashi Fermentation Actually Works

Bokashi relies on a community of beneficial microorganisms — primarily lactobacillus bacteria — that are cultured onto a wheat-bran carrier and sold as bokashi bran or bokashi activator. When you layer food waste with this bran inside an airtight bucket, the microbes suppress rot-causing bacteria and pickle the organic matter rather than decomposing it. The result after two to four weeks is a pre-compost that smells faintly tangy, not putrid.

A secondary by-product, bokashi leachate or 'bokashi juice', drains from a tap at the base of the bucket. Diluted roughly 1:100 with water it functions as a liquid fertiliser for potted plants and balcony herb gardens — a direct practical win for any property that keeps ornamental or culinary plants on site.

How to Run a Bokashi System Step by Step

  1. 1

    Assemble your equipment

    You need a bokashi bucket with an airtight lid and a drainage tap — purpose-made units are available online or at Greek garden centres, but a food-grade plastic bucket with a tight lid and a small tap fitted at the base works equally well. Keep a second bucket ready so you can rotate: while one batch is fermenting, you fill the second. Also buy bokashi bran from an organic garden supplier; a one-kilogram bag typically covers six to eight weeks of household food waste.

  2. 2

    Layer food waste with bokashi bran

    Add kitchen scraps in layers roughly five centimetres deep, then sprinkle a generous tablespoon of bokashi bran over each layer. Every type of food waste is acceptable — cooked meals, meat, fish, cheese, citrus peel, coffee grounds, and eggshells all go in. The only materials to avoid are large bones, liquids (drain excess moisture first), and mouldy food, which can introduce competing fungi that disrupt the fermentation culture.

  3. 3

    Press down and seal after every addition

    Expel as much air as possible by pressing each layer down firmly with a plate or small lid that fits inside the bucket, then close the main lid tightly. Oxygen is the enemy of anaerobic fermentation: air pockets allow aerobic rot to take hold, which is what causes the foul smell most people associate with compost. This single habit — press and seal every time — is the most important technique in the entire process.

  4. 4

    Drain the leachate every two to three days

    Liquid collects at the bottom of the bucket as the food breaks down. Open the tap every few days and collect this leachate in a small jar. Dilute it at a ratio of one part leachate to one hundred parts water and pour it around the base of balcony plants, garden beds, or terrace pots; undiluted it is too acidic for roots. You can also pour a small amount neat into drains to suppress odour-causing bacteria in pipes — a practical bonus in holiday rentals.

  5. 5

    Bury or blend the finished pre-compost

    After two to four weeks the bucket is full and the contents have fermented through. The pre-compost is not yet finished compost — it is still acidic and partially intact — so it needs a secondary stage. If you have any garden soil, pots, or raised beds, dig the pre-compost in at a depth of at least twenty centimetres and leave it for two to three weeks; soil microbes complete the breakdown rapidly. If you have no outdoor space at all, mix the pre-compost into a large container of potting soil at a ratio of roughly one part pre-compost to three parts soil, seal it for two weeks, and you have a nutrient-dense growing medium ready for planters.

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FAQ

Does bokashi composting smell bad?
A correctly run bokashi bucket should smell pickled or lightly vinegary — similar to fermented foods — not rotten. A genuinely foul or putrefying smell usually means air got into the bucket or the food waste was already heavily mouldy before it was added. Pressing waste down firmly and sealing the lid after every addition prevents almost all odour problems.
Can I use bokashi compost directly on balcony plants?
Not straight away. Fresh bokashi pre-compost is still acidic enough to damage plant roots. Mix it into potting soil at roughly a one-to-three ratio and allow two to three weeks in a sealed container or bag before using the blended mix in pots or planters. The leachate, diluted 1:100 with water, can go onto plants immediately and is an effective liquid feed.
Where can I buy bokashi bran in Greece?
Bokashi activator bran is stocked by organic garden centres in Athens, Thessaloniki, and tourist-oriented areas of Crete and Rhodes, and is widely available from online retailers that ship across Greece. Search for 'bokashi activator' or 'bokashi bran' — some Greek garden suppliers also sell it under the label 'effective microorganism bran'. A one-kilogram bag costs roughly five to twelve euros and lasts an average household six to eight weeks.

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