I got a jug of apple cider, unfiltered, put it in a half gallon mason jar, then added a bottle of the Braggs raw ACV. In about a week, the white pancake-looking mother had formed at the top and the liquid started clearing. The mother will eventually drop to the bottom and a new one will start to form, like a film, at the top. I save the daughter in a cup, strain off about 1/2 of the vinegar, and top off with more cider, add the daughter back. I've also taken a cider vinegar daughter and put it into some wine with water and a dab of honey & culture wine vinegar that way (for me, not the hens)
You can look this process up on line; the websites have lots of pictures.