It's been years since I had one and today I started a new sourdough. 2 T apf, 2 T warm water with juniper berries. I soaked the berries for about 1/2 hour, then mixed in the flour. It's in a 1/2 gallon glass jar. Wish me luck! Tomorrow, it'll be fed the apf and warm water with a small pinch of palm sugar.
wow, that's positive thinking...but it might be too big. I tend to use much smaller containers.
Good luck! May the forces be with you!
Don't feed until it shows activity, just stir often. It should go quick, I've done more than a few using berries from the backyard. Beware though - yeast tends to populate first, then lab, opposite of the normal chain of events. Enjoy!