Part 2 of my memories of Memories from a parallel future: PRESERVING.
What has been collected needs to be preserved. Salt is an edible stone that is soluble in water. You sprinkle it on your food and in disappears into it and completely alters the taste. Once a culture has discovered salt, there is no going back. Salt has long been used for preserving food, next to drying and smoking. It preserves life (our’s) because it kills life (what would otherwise live in our food). Kind of like hand sanitiser.