Late last night I finished reading Travels with Charley. In 1960, John Steinbeck purchased a heavy duty pickup truck and equipped it with a custom made camper. He and his dog Charley then traveled around the country rediscovering America. This book is about their journey.
This isn't a book review or anything like that, but I did read something that caught my attention. Near the end of the book, Mr. Steinbeck parked his pickup for the night in some remote area of Louisiana, and as he did throughout the book, he invited one of the locals into the camper for a talk about various regional events. On this occasion the author brewed a pot of coffee into which he added an egg white, and strangely, the shell. He then writes, "I know nothing that polishes coffee and makes it shine like that." I have never heard of the practice before, so I looked it up. The paragraph below is representative of most of what I found:
Add a spoonful of eggshells to your coffee grounds for a smooth cup of coffee. The calcium in the eggshell helps to reduce the acidity of coffee and will also help any loose grounds sink to the bottom of the cup. The eggshell and coffee grounds trick is especially helpful when making coffee in an old percolator or in a pot while camping.