I am new to all this. I accidentaly made some awesome hard cider from red delicious apples on my property. What happened was we juiced them and forgot about the juice in the fridge. we noticed the lids on the jars were puffing (canning jars) so i released the pressure and put them back in the fridge. a buddy said i should try it because its either hard or vinegar. well it turned out to be hard, and very good (its sad there is only 2.5 pints). now i have some clear liquid with what looks like a mother in the bottom. someone told me that yeast makes a mother and i can keep her in the jar in the fridge. she will go dormant and when fed produce yeast. i was just wondering if there was any technical information on this or any advice. thanks!