Q: Can I add cooked food waste to my worm composter?

I would avoid this – first of all there’s the trudge to the bottom of the garden but also this sort of waste has a tendency to attract pests if anything is going to. The best methods for kitchen waste are Worm Composting or Bokashi and for cooked waste Bokashi is the most flexible - the Japanese fermentation method is fantastic for all sorts of waste and can deal with bulk amounts in one go (unlike a worm composter). Shop our Bokashi Kitchen Food Waste Composters

Question 1

What to do if there’s white mould growing in my bokashi bin?

Accepted Answer

This is good news. The white mould is actually a fungi and shows that the food waste is fermenting rather than putrefying. Fermentation is precisely what you want in your bokashi bucket. So, if you see white mould on your bokashi food waste, you can be confident that all is well in your bokashi bucket.

Question 2

What can I use the Bokashi Juice for?

Accepted Answer

Bokashi juice contains nutrients from the food waste and is packed with micro-organisms so it makes a great free fertiliser!

Pour the concentrated Bokashi juice directly into kitchen and bathroom drains, toilets and septic systems. It helps prevent algae build-up and control odour. And as a huge bonus, it contributes to cleaning up our waterways as the good bacteria compete with the bad bacteria! A win win.

Question 3

Can I add cooked food waste to my worm composter?

Accepted Answer

I would avoid this – first of all there’s the trudge to the bottom of the garden but also this sort of waste has a tendency to attract pests if anything is going to. The best methods for kitchen waste are Worm Composting or Bokashi and for cooked waste Bokashi is the most flexible - the Japanese fermentation method is fantastic for all sorts of waste and can deal with bulk amounts in one go (unlike a worm composter).

Shop our Bokashi Kitchen Food Waste Composters

Question 4

What to do if...... There’s blue and black mould in my Bokashi Bin bin.

Accepted Answer

The best way to deal with this is to throw the whole batch away. The problem is caused by one of three things:

You have added really mouldy food into your kit.
You haven’t added enough Bokashi Bran.
There is too much moisture in the bin so the liquid needs draining.

Question 5

What to do if there are maggots or insects in my Bokashi Bin.

Accepted Answer

Obviously these must have entered on your food waste in some form so the first step is to add your food waste more regularly to avoid this issue. If they are there the best option is to bury the whole lot in your soil and restart.

Question 6

What to do if my Bokashi Bucket Smells?

Accepted Answer

If your kit begins to smell add a good handful more of Bokashi Bran as it is likely the waste is putrifying rather than fermenting. It does usually have quite a strong smell of fermentation when you empty your bucket so before you restart a good swill out with water is best – then once you have the lid on again all will be well.

Question 7

How much do I need to dilute my Bokashi Liquid?

Accepted Answer

The recommended dilution ratio for bokashi liquid is 1 part bokashi liquid to 100 parts water. This means that for every unit of bokashi liquid, you should add 100 units of water. For instance, if you have 1 cup of bokashi liquid, you would dilute it with 100 cups of water. This dilution ratio ensures that the nutrients and beneficial microorganisms present in the bokashi liquid are delivered in a manageable concentration for plants, preventing any potential harm from over-fertilisation or acidity.

Question 8

Does Bokashi smell?

Accepted Answer

No. Bokashi waste smells pleasantly tangy—like pickled vegetables or cider vinegar. This is a sign that fermentation is working. If it does smell rotten or putrid, it’s usually because too much liquid has built up, or the lid hasn’t been sealed tightly enough. Drain the liquid regularly and ensure the bin is airtight for the best results.

Question 9

Do I need a lot of space for a soil factory?

Accepted Answer

Not at all! A soil factory can be as compact as you like. A large plastic storage tub with a tight-fitting lid works brilliantly and can be kept in a corner of your garden, greenhouse, or even on a balcony. If you’ve got space for a couple of bins, you can set up a rotation system to keep things running smoothly. It’s perfect for those with limited outdoor space or urban gardeners.

Question 10

Can Bokashi composting reduce methane emissions?

Accepted Answer

Yes, massively! Traditional food waste in landfill decomposes anaerobically (without oxygen), producing methane—a greenhouse gas over 25 times more potent than CO₂. Bokashi composting prevents this by fermenting waste instead of letting it rot. The process creates organic acids instead of methane, making it a climate-friendly solution for food waste management.