One or two clean jars. I use two 400ml jars and I make two starters at a time so that I have enough for the recipe I'm sharing here.
Buckwheat flourto make thin paste
Pour about 2 cm of kombucha tea into the bottom of the jars.
Add buckwheat flour - enough to make a thin paste and mix well.
Each day add more buckwheat flour and un-chlorinated water to the mixture and combine well until you have enough starter to make your bread. Make sure to keep the consistency similar to a thick-ish pancake mixture by adding anywhere from a heaped teaspoon to a couple of tablespoons of flour plus water, depending on how quickly you want your bug jars to fill up and how quickly you want to be able to make your bread.