So they only filled their storage crocks three-fourths full, and once a month would shake them. The shaking of the beans would by itself kill the been weevil larvae, and thus their beans would remain unharmed in storage. Again, in village A, persons long before had noticed that beans were hard to digest, which meant that all of the food value was not being extracted from them. The lye altered the state of the lysine in the beans, so the available amino acids were much more readily assimilated by the human digestive tract. Well, they tried, but the B villagers said they had been growing and saving beans for years, they knew what they were doing, and something as simple as shaking their beans was dumb, and they weren't going to put any wood ashes in their beans.
Some people have a problem digesting beans, claiming bloating or flatulence.
Cooking the beans in the soaking water can be responsible for this annoyance. They should not eat any legumes, including bean sprouts, soy oil or products containing soy proteins. Frozen TV dinners almost always contain soy oil. Virtually all mayonnaise is made from soy oil. Legumes are a rich source of the B complex family.