Second fermentation is an additional fermentation step to add excitement to your brew. Sugars are converted to acids, trace levels of alcohol and carbon dioxide gas which generates a huge amount of pressure, that's enough to cause cheap, low quality bottles to explode. This is why we launched these high quality bottles.

You can experiment with a range of different juices, whole fruit pieces, honey, herbs, spices and superfoods to create an endless range of different flavour and nutritional combinations. The fermentation helps to unlock nutritional compounds in your foods, making them more bioavailable but most appealing is it creates the most delicious probiotic fizzy drinks and milk kefir, low in sugar and much more economical and probiotic rich than store bought products.

How to Second Ferment Kombucha or Water Kefir?

1) Once you've fermented your milk kefir, kombucha or water kefir, mix in a jug, 1 part fruit juice with 9 parts Kombucha/ Water Kefir + any spices and superfood like turmeric, acai, spirulina, maca, matcha etc + any herbs like mint, basil etc

There are lots of recipes ideas in our free NourishmeOrganics VIP Group here

2) Pour Mixture into Second Ferment Bottle, leaving 3 to 5 cm headspace and cap tightly.

3) Leave at room temperature for 2 to 7 days depending on the weather at the time i.e a warmer temperature will result in a faster second ferment ( the longer you leave the less sugar will be left but your brew will be more sour and potentially higher in alcohol**). We recommend tasting your brew daily to establish the taste that you like, and at this point you can end the ferment. Tasting is a good way to remind you to open and release any excess pressure in the bottle.

4) Transfer brew to a refrigerator to chill.

5) Open and Serve*

How to Second Ferment Milk Kefir?

1) Once you've fermented your milk kefir, mix in a jug, milk kefir + honey + fruit pieces + any spices and superfood like turmeric, acai, spirulina, maca, matcha, chia seeds etc + any herbs like mint, basil, nuts etc. We recommend starting with a small piece of lemon or orange peel or a couple of fresh berries. You can even make a savoury version using garlic, pepper and herbs. The flavour combinations are endless. So have a play.

There are lots of recipes ideas in our free NourishmeOrganics VIP Group here

2) Pour Mixture into Second Ferment Bottle and cap tightly.

3) Leave at room temperature for 1 to 4 hours.

4) Transfer brew to a refrigerator to chill.

5) Open and Serve*

*Caution: Water kefir and Kombucha Second Ferments may become very fizzy so be careful when opening lid after fermentation

**Advisory Statement

All fermented foods may contain trace amounts of alcohol. If fermented foods are being prepared for children, breastfeeding mothers, or pregnant women please seek medical advice from a trained medical practitioner before consuming these products.

To keep alcohol as low as possible, make sure that:

- first ferment was conducted with lid slightly open

- the first ferment is sour to taste

- use no more than 25ml fruit juice per 250 ml

- second ferment for 48 hours max, chill and consume within 24 hours ( you will not get as much fizz but alcohol will be as low as possible)

Let customers speak for us

from 7972 reviews

Lovely

Well packaged, high quality product. Very clear instructions. Looking forward to trying the Kombucha.

Michael P.

11/17/2025

Raw Organic Vegan Kombucha Scoby + Instruction E-Card

A great product, shipped quickly. Ferments very well.

John W.

11/16/2025

Organic Milk Kefir Grains 5g + Recipe E-Book

Excellent product!

Great quality Bee Pollen! And very affordably priced!

Urszula K.

11/14/2025

Raw Organic West Australian Bee Pollen 200g

Excellent service.

J.A.S.S.

11/11/2025

Raw Organic Vegan Water Kefir Grains 15g + Recipe E-Book

5 tablets a day for 6 days taken by my 94 year old mother.

Outcome from the above dosage ;
1) Stopped her dry coughing that had been going on for 2 months.
2) Stopped her constant acid reflux experience after a meal.
3) Stopped her legs from feeling extreme fatigue when in bed at night.
4) Stopped her legs from feeling an undescribably irritating kind of pain when in bed at night.
I think all 4 symptoms are caused by the Pfizer mRNA Covid-19 vaccine that she took for her first booster shot. She had the initial two AstraZeneca Viralvector vaccine shots before getting this Pfizer booster. So she had 3 Covid-19 injections in total.
I suspect the spike proteins being produced in her body are causing autoimmune disease and also destroying her CD4 T cells. The high dosage of L-reuteri were able to communicate to her bone marrow to make more CD4 T cells hence causing her to get enough CD4 T cells to put her immune system back into function.
I'm getting my mother to take the 5 tablets per day for 6 days at the start of each month then going back to 1 tablet a day for the rest of the month. I think this might be sufficient to keep her immmune system functioning adequately until someone comes up with a method of stopping the goddamn spike protein production in her body.

Keong Y.

11/11/2025

MyReuteri Starter Culture 20 Billion CFU per gram 30 caps

Mason jar bands

These work perfectly with my pickle pipes for a rust-free solution to my ferments.

Judy N.

11/09/2025

Wide Mouth Tough Bands - Rust Proof - Plastic Mason Jar Bands - 4 Pack

Great product

Awesome

Kay H.

11/04/2025

100% Pure Hydrolysed Beef Collagen 200g

Sprouting lids

So much easier straining my sprouts with these lids, should have bought them a long time ago!

Judy N.

11/04/2025

Bean Screen - Bean Sprouting Lids for Mason Jars - 2 Pack

Spleen tablets

These are amazing. I take just 2 a day and my iron storage level has risen for the first time in a few years! Thank you!

Helena W.

11/04/2025

Nxgen Organic Grass Fed Beef Spleen 160 Capsules

Help with lowering blood glucose

I’m not diabetic but I want to get my blood insulin levels in the range of <5 as recommended by Dr William Davis I’ve been making yogurt with it and have seen my level decrease over a period of 6 weeks from 5.2 to 4.9.
It is an excellent product.

Britt S.

11/04/2025

BiotiQuest Sugar Shift Starter Culture 60 caps

Mason Jar Lids

Great jars. Just the right size for just about anything.

Barbara K.

11/03/2025

Ball Mason Quart (950ml) Wide Mouth Glass Jar and Lid

5 stars

love the quality yogurt I can make with your wonderful product

Anne M.

11/03/2025

Pure Organic Probiotic Yoghurt Starter Culture 3 x 1g sachets

Inulin Review

This has become a regular purchase for me. I use it as a prebiotic for fermenting dairy as recommended by Dr William Davis. It’s well packaged and arrives promptly. I have been successfully making and enjoying L.reuteri yoghurt for several months, with noticeable health benefits. My first batch of Bacillus coagulans is now fermenting in my Sous Vide container. I’ll update you as my fermentation experiments proceed.

Kelcey T.

11/03/2025

100% Pure Organic Chicory Root Fibre (FOS Inulin)

Great

Brilliant machine has made perfect yoghurt every time

Ann R.

11/03/2025

Reuter-i Pro Yoghurt Maker | 2L Glass Container| Reuteri Yoghurt

It worked!

Second attempt at making kefir and it was successful(the first attempt was from a batch from a friend). Really clear instructions. The recipe book had unusual measurement - dcl which I had to google then translate into what worked for me. Good product

Michelle F.

11/03/2025

Organic Milk Kefir Grains 5g + Recipe E-Book

Second Fermentation Bottles and Accessories

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What is Second Fermentation?

How to Second Ferment Kombucha or Water Kefir?

Let customers speak for us

Second Fermentation Bottles and Accessories

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Price filter

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What is Second Fermentation?

How to Second Ferment Kombucha or Water Kefir?

Let customers speak for us