In my understanding, the way this works, is that there is a protein in dry beans that serve as a protection against the bean being eaten by animals, so that it can remain a seed and grow more beans. When the bean is soaked, and begins to sprout, that protein is activated, and it is undigestable to animals, who learn don't eat that thing. By providing an enzyme that either converts starch to sugar, or by fermentation (converting sugar to alcohol), that protein can be pre-digested, to make it digestable by humans.
There really isnt an average number of showings before getting an offer. Some sellers will get an offer on the first showing, others may not get an offer until after the 25th showing.
SOFEX to Exhibit at the 2009 AUSA Annual Meeting and Exposition. the depositary for the offer, has advised AUSA that 14,543,849 shares were validly tendered and not withdrawn prior to the expiration of the offer, including approximately 1,449,608 shares tendered by notice of guaranteed delivery.