I harvested the yacon and parted them in more or less equal pieces. Sorry, I don't have all that much so one portion per customer only! One pack should be enough for starting a patch. The first picture shows four portions.
It can be cut up as long as every piece has at least an eye like for potatoes but I would leave the pieces bigger because they are less susceptible. last year I planted them right away in autum and they stayed in the ground over winter. I guess that I have lost some crowns this way. Some growers store them in moist soil over winter in a frost free place. More information about yacon you find under yacon (the plant).