Kefir Starter Kit + Culturing Flask | Free Shipping

(No reviews yet) Write a Review
Free Shipping
Not yet available in the gift box as shown
Adding to cart… The item has been added


Ever had trouble keeping your fermented foods at the right temperature? We have too. That is why we have combined the Mad Millie double-walled, stainless steel culturing flask with the Kefir Starter Kit.

Whip up your next batch of kefir, yoghurt, skyr or butter and pop it into this perfectly sized flask. Leave it overnight so the cultures can work their magic and voila! 

Designed to be used with Mad Millie Greek Yoghurt, Coconut Yoghurt, Kefir, Skyr and Cultured Butter Kits.

  • Electricity free
  • Stainless Steel

Quantity: 1 L capacity
Size: 13 cm x 13 cm x 20 cm


Kefir is a delicious drink bursting with live kefir cultures. It contains eight beneficial bacteria strains, so it's good for your tummy and tastes good too! 

The Mad Millie Kefir kit contains all the specialised ingredients and equipment you need to make your own kefir at home. You can use low or full fat milk, soy, coconut water or fruit juice. Just add culture, shake and leave for 24 hours.

Drink on its own, pour over cereal or add to a smoothie, whatever you choose, it's easy, simple and delicious. With this kit you can also make kefir cheese too. 

The kefir culture is shelf stable for 10 months. However, we suggest storing cultures in the freezer when you receive them in order to prolong the life of the culture. 

Gluten Free - Nut Free 

What's Included?

Mad Millie Culturing Flask

It can be the most frustrating thing with yoghurt, coconut yoghurt, kefir and skyr, when you have spent time getting everything just right, added your culture and left it in the warmest spot you can find. Only to come back the next morning to find…..nothing has happened!

Temperature is crucial to ensuring you give the cultures the right type of environment to grow and multiply. There are two different types of cultures used with the Mad Millie food products, mesophilic and thermophilic.

Mesophilic is a non-heat loving culture. This is the most common type of culture used for cheese making and can only be heated to 40oC (104oF), any higher and you will start deactivating it. The more optimum the temperature, the better the culturing process which is why for a lot of cheese making a water bath and ripening period is required.

Thermophilic is a heat-loving culture and is used to make yoghurt, coconut yoghurt, kefir and skyr. It likes to be heated up to 55oC (130oF) and maintained at a warm temperature over a longer period so the cultures can do their job! This is where things get tricky if you can’t maintain the right temperature. The cultures won’t be working, and you’ll end up with a less flavoursome, runnier product.

This is where the Culturing Flask steps in!

Designed to perfectly fit the Mad Millie 1 L (1 US qt) jar this little flask of goodness will take out any issues with temperature. Not only does it look appealing when sitting on the kitchen bench, it is ridiculously easy to use and does not require electricity.

At the very start of your yoghurt making experience boil a nice full jug of water. Pour this into the Mad Millie Culturing Flask and seal.

Go about your yoghurt/coconut yoghurt/ kefir/skyr making until you have sealed your jar and it’s ready to ripen. Pour the water out of your Culturing Flask which is now nicely pre-heated and pop the jar in. Seal and leave on the kitchen bench overnight. It’s as easy as that!

If you need to culture longer than 12 hours, we recommend opening the flask up in the morning, removing the jar and refilling the flask with boiling water. Let it sit, sealed for a couple of minutes to ensure the inside is nice and warm again before pouring out the water and replacing the jar. This will ensure the most optimum temperature throughout the whole process.

Videos Hide Videos Show Videos