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.
And unless you and your agent set a specific date to review all offers at the same time, buyers assume that their offer will be heard right away, Some home sellers prefer to delay reviewing offers for a week or longer, which enables agents to show the home to a higher number of potential buyers. This tactic can yield multiple offers, but if the seller waits too long, potential buyers may get discouraged and withdraw their offer. Another approach is to hold off on reviewing offers until after the first public open house is held.