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Mad Millie Culturing Flask


Sometimes it can be tricky to maintain the correct temperature when using culture. That's why we've created Mad Millie double-walled, stainless steel Culturing Flask.

You can now whip up your next batch of yoghurt, kefir, skyr, butter or kombucha and put the jar directly into the insulating flask. Leave it overnight so the cultures work their magic and voila, perfect culturing every time!

The Culturing Flask has been designed to fit our jars perfectly. 

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


  • Helps main temperature when making yoghurt and other fermented foods 
  • Stainless steel 
  • Electricity free
  • Looks great on any kitchen bench top 


  • 1L capacity 


  • 13 cm L x 13 cm W x 20 cm H
  • 800 g