Liver and Onions

I called my parents and they were just sitting down to a dinner of liver and onions. Knowing what I know about the liver – that EVERYTHING goes through this organ – I was not enticed. They seemed to be quite excited to be eating this favorite food, so I didn’t want to ruin their appetites. However, it did occur to me that basically they were eating the filtration system of a cow’s power plant and sewage system. I love the liver, but not to eat!