This recipe is pretty much unedited but I needed to get it up on the blog since each year we forget how to make these and have to rummage through our computers and emails to relearn. (January 2017: Rivka finally wrote down measurements that we were happy with. They appear at the end of this post.)
This recipe came from my brother-in-law in 2009. The expert speaks:
The key is to grate the potatoes then squeeze the gratings to get out as much moisture as possible.