900ml Replacement Jar for yoghurt maker with stainless steel compound lid

Heavy-duty glass fermentation weight designed to keep vegetables fully submerged during lacto-fermentation. Fits most standard wide-mouth preserving jars including Mason, Kilner, Ball, and Agee jars. Easy to clean, reusable, and dishwasher safe.

Size: 70mm diameter x 25mm depth
Weight: 170g ±10g

Always measure the top diameter of your jar before placing an order. Make sure that the diameter does not get narrower further down.

Silicone fermentation airlock for safe, reliable home fermenting. Allows gases to escape while keeping oxygen out, helping protect your pickles, vegetables, and drinks during lacto-fermentation. Reusable, durable, and dishwasher safe. Available in blue, green, purple, red/pink, and white.

Diameter: 8.3 cm

Also available with stainless steel ring (see separate listing).

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

Everything you need to start fermenting at home with confidence. This complete Fermentation Pack includes essential tools for safe, consistent lacto-fermentation—perfect for beginners and experienced fermenters alike.

Includes a fermentation pounder, fermenting weight, airlock system, 1L preserving jar with stainless steel compound lid, and a comprehensive eGuide.

Additional Fermentation Jars with airlock and weight can be purchased here.

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.

Learn how to make delicious, probiotic-rich sauerkraut, kimchi, pickles, and fermented vegetables at home with our comprehensive Lacto-Fermentation Guide.

Drawing on more than 10 years of hands-on fermentation experience at KoruKai Herb Farm, this practical guide teaches traditional lacto-fermentation methods to help preserve seasonal harvests while supporting gut health naturally.

Perfect for turning an abundance of cabbages, carrots, beetroot, and other vegetables into vibrant, living foods packed with beneficial microbes.

Available as:

• Downloadable PDF
• Printed booklet (with shipping cost)

Please choose your preferred format below.

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 guide covers all the essentials you need to create delicious, probiotic, and naturally fizzy water kefir sodas at home. Learn how to successfully make both the first and second ferment, along with flavouring ideas, recipes, and helpful tips for creating delicious homemade kefir sodas.

Perfect for beginners and experienced fermenters alike.

Available as:

• Downloadable PDF
• Printed booklet (A5, with shipping cost)

Please choose your preferred format below.

If purchasing our KoruKai  Water Kefir Grains or our Water Kefir Kit this Guide as pdf is included with your purchase.

This guide covers everything you need to know to make probiotic-rich milk kefir using milk kefir grains. With over 15 years of experience, we share proven methods to help your grains thrive so you can enjoy healthy kefir for life.

Available as:

• Downloadable PDF
• Printed booklet (A5, with shipping cost)

Please choose your preferred format below.

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

Everything you need to start making refreshing, probiotic water kefir at home. This complete kit includes dried water kefir grains, a glass fermentation jar, airlock system, strainer, kefir food, and a detailed guide with instructions and recipes.

Water kefir is the vegan cousin of milk kefir and the caffeine-free alternative to kombucha. These live cultures can be used again and again to create refreshing, naturally fizzy probiotic drinks at home.

Easy to make and endlessly versatile, water kefir is a great way to support gut health while creating delicious homemade sodas, fruit ferments, and flavoured drinks.

Preserving jar with stainless steel compound lid for preserving, fermentation, vinegar making and much more.

Capacity: 1000ml

Size: 17cm high

Mouth size: 7.6cm wide mouth

Grow your own refreshing, fizzy probiotic drink at home with our organic water kefir grains.

We use only certified organic ingredients and filtered spring water to cultivate healthy, active grains.

Water kefir is a reusable, perpetual culture that can be used again and again to brew naturally sparkling drinks that support digestive health.

Choose from:

• 3 Tbsp fresh water kefir grains
• 1 Tbsp dried water kefir grains

Each portion makes approximately 1 litre of probiotic water kefir every 24-48 hours.

Includes our comprehensive Water Kefir eGuide packed with instructions, tips, and recipe inspiration.

For best results, we recommend feeding your grains with our Water Kefir Complete Food.

Fresh water kefir grains are shipped every Monday (or Tuesday following a public holiday). Orders must be placed and paid for by 4 pm Saturday for shipment the following week.

Billions of live probiotics in every tablespoon.

One portion of organic milk kefir grains cultures approximately 1 cup of milk every 24 hours and can multiply to culture up to 1 litre within two weeks under good conditions. Available in hydrated or dehydrated form (please select below).

Easy to use and endlessly reusable, milk kefir grains allow you to make fresh, probiotic-rich kefir.

Shipping Information

NZ-wide shipping available to urban and rural addresses, including PO Boxes.

Fresh milk kefir grains are shipped every Monday (or Tuesday if Monday is a public holiday). Orders and payment must be received by 4pm Saturday for dispatch the following Monday.

pH strips are a quick and easy way to check the acidification of your cheese and ferment.

In a lactic ferment and in cheese making beneficial microbes are underway to turn plant sugars and lactose into lactic acid.

This acidification can be measured and ensures your ferment or your cheese is on the right track.

For most cheeses timing of salting is really important; you want the fermentation to be just at the right acidity before you apply salt to slow it down.

Billions of probiotics per tablespoon for gut health.

Everything you need to start making delicious, probiotic-rich milk kefir at home.

This beginner-friendly Milk Kefir Making Kit includes organic milk kefir grains, a wide-mouth glass jar, stainless steel strainer, dairy thermometer, and our comprehensive Milk Kefir eGuide with step-by-step instructions.

A simple and affordable way to make fresh kefir again and again from your own kitchen.

An additional glass jar for keeping ready kefir milk in the fridge can be purchased here: 500ml glass jar.

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.

Silicone fermentation airlock with stainless steel band, designed for safe, reliable lacto-fermentation. Allows gases to escape during fermentation while preventing air from entering, helping protect your ferments from spoilage.

Ideal for pickles, vegetables, and fermented drinks.

As pressure builds, gas safely vents through the airlock without allowing oxygen back in.

Diameter airlock: 8.3 cm

Also available without ring (see separate listing).