i have been trying to make banana vinegar from peels and overripe fruits. i tried the wid fermentation technique, means putting them into and open clay pot, pooring sugar and water over and covering it with a cloth.
but the problem: after a week, the surface of the liquid of was quite moldy.
so my question is how i can i avoid this? by pushing bananas and peels totally under water with a heavy weight, or using a different pot, or any other idea?