Kefir Strainer

Fermentation jar with airlock and glass weight.

One thing that should be in just about everyone's diet are fermented or cultured foods. Not only are they packed with flavor, but they're positively brimming with probiotics.

Those little microorganisms support your immune system and help to revive and maintain gut health. Fermented foods are also rich in B vitamins, food enzymes and key antioxidants that support healthy cells.

This glass fermentation weight is just what you need to make ferments successfully at home.
Place it over your shredded vegetables and fit a fermenting airlock on the jar.
They are also great to make homemade apple cider vinegar.

Diameter is 70mm, depth 25mm
Weight: 170g +/- 10g

The weight fits most wide mouth preserving jars. Always measure the top diameter of the jars before placing an order. Make sure that the diameter does not get narrower further down.

This weight fits our 1 litre Glass Jar with stainless steel compound lid.

One weight is $8.50

We will make a big batch in a certified dairy factory twice a year so you can stock up when needed. We have it available over the next week. Orders can be made until 3rd May, 8am. We will ship it on the 4th May.

More info and FAQ is below!

This silicone fermentation airlock and stainless steel band is perfect for keeping lacto-fermented pickles and drinks under an airlock during fermentation and storage. As pressure builds up gas pushes out the top of the spout without letting air in.

Diameter of airlock is 8.4cm

One airlock with ring is $8.90

For airlocks without ring please go here.

We will make a big batch in a certified cheesery once a year so you can stock up when needed. We have it available over the next week. Orders can be made until 3rd May, 8am. We will ship it on the 4th May.

Diameter: 8.4cm

This silicone airlock is perfect for keeping lacto-fermented pickles and drinks under an airlock during fermentation. As pressure builds up gas pushes out the top of the spout without letting air in.

They are suited for mason jars and are secured with a stainless steel ring (ring not included). This airlock fits our 1 litre Glass Jar with stainless steel compound lid.

1 airlock WITHOUT ring is $5.90.

For airlocks with ring please see here.

Certified organic water kefir food containing sugar, molasses and micronutrients to feed your water kefir grains optimally. This pack contains the food for water kefir grains only, you need to have your own grains or buy them from us.

This way they stay healthy and produce a better probiotic fizzy drink for you and your family.


Available in 100g, 500g and 1kg bulk pack in a home-compostable, biodegradable pouch.


Containing only certified organic ingredients so that your water kefir grains can thrive (do not come with the grains). Without any roundup or other agricultural chemical residues, which could have a negative effect on the microbes in the water kefir.

500ml food screwtop jar and white foodseal cap used for our milk kefir kit.

Capacity: 500ml

Diameter: 9.9cm

Height: 10cm

Cap size: 9.2cm

Billions of probiotics per tablespoon for gut health.

1 portion of organic milk kefir grains to culture 1 cup of milk every 24 hours, which can increase to 1 litre within 2 weeks. Available in hydrated and dehydrated form (please select below).

Shipment NZ wide to urban and rural addresses as well as PO Boxes.

Shipment of fresh milk kefir grains every Monday (or Tuesday if Monday is a public holiday). Orders and payments need to be in by 4pm Saturday to get shipped the following Monday.

We have a set amount of grains per week and are generally out of stock by the end of each week. If this product is out of stock it will be back in stock on Saturday evening, so you can order for the following week.

This guide covers all the basics that you need to know to create probiotic, healthy milk kefir using milk kefir grains. We have well over 10 years of experience and know how to get milk kefir grains to thrive so you can also have them for a lifetime.

If purchasing our KoruKai Milk Kefir Grains or our Milk Kefir Kit this eGuide is included with your purchase.


You will get the eGuide as downloadable pdf so make sure you enter the correct email address when placing your order.

Last update: 12th March 2024

The Ultimate Dairy Yoghurt Guide

Learn how to turn dairy milk into healthy and delicious natural yoghurt without any additives.

With recipes turning yoghurt into a variety of soft cheeses and dips and using it for baking to enhance nutrient availability and flavour.

This eGuide contains 40 pages of detailed instructions and links to demonstration videos on how to make thermophilic and mesophilic yoghurt on a perpetual basis as well as recipes to turn your yoghurt into special dishes - from yoghurt icing for a cake to yoghurt cheese balls and labneh (please find the table of contents below).

This is an ebook and will be available as a pdf to download once your order is placed.

We have put together this kit for anyone wanting in making delicious water kefir at home.

The KoruKai Herb Farm "Water Kefir eGuide" will be sent via email once you have placed your order. Please look for an email with the subject line: [KoruKai Herb Farm] Files available for your order. It will guide you along step by step to make your own probiotic, healthy, fizzy water kefir sodas at home.

You can get an additional glass jar here.

Expected to arrive mid week (11th March). Orders will be dispatched as soon as we receive them. 

This Fermenting Flask from Culture Cupboard is perfect to keep your kefir at a steady temperature without the nightly lows in winter and the mid day highs in summer.

It is also amazing to make your own yoghurt without the need for an electric yoghurt maker.
The flask comes with a glass jar and a recipe book to make your own dairy and dairy-free yoghurts.

We have made a great amount of ferments over the years at KoruKai Herb Farm and used a fair bit of pounders. We know what makes a pounder fabulous.
This one is made to our measurements and is well-designed for pounding vegetables and tightly packing them into jars or crocks for best fermentation.

The wood is untreated beech.

Measurements: length 30cm, top diameter 4cm, bottom diameter 6.1cm. Easy and comfortable grip with a tapering of 3.5cm diameter.

Please note: Measurements can vary slightly as each one is handmade and unique.

Fully booked! To go onto the waiting list please sign up below. 

This is an informative workshop for anyone interested in healthy food. No cooking skills are required. You will walk away with some easy recipes that you can implement in your own kitchen using basic equipment.

Date: Saturday, 2nd May 2026
Time: 10am-2:30pm

Location: KoruKai Herb Farm, Pigeon Bay, Banks Peninsula
1 hour from Halswell, Carpooling from Chch is usually possible.

Wholesome lunch included!

Please find Terms & Conditions as well as our cancellation policy here. When signing up for this workshop you automatically agree to the Terms & Conditions. Please make sure to read them.

Must have for cheesemaking, kefir cheese and yoghurt cheeses.

Made with certified organic cotton.

Size: 1.5m x 1m