Originally Posted by mirageman1991
Yes, you can use the baby with the mother in a new batch, once it is about 1/4" thick it can be used to make its own batch.
thickness doesn't matter and is more a result of temperature (and perhaps sugar, but temperature foremost). if i recall correct the thicker and more white the mothers are, is the result of a slightly cooler environment. warmer ferments and the scoby will thin out.
as long as you have a scoby along with 1/4-1/2 cup of your previous batch for starter, your next batch of kombucha should grow. i don't even touch the mothers until i have 3-6 layers. then i'll usually toss all but one and continue on