In Korean natural farming, one of the most important organic and natural farming inputs is making calphos or calcium phosphate out of egg shells which you can find present in any kitchen big or small that you have at home. Eggs are a commonly eaten food especially during breakfast and even if you are not eating them daily, chances are, you can still get some eggs from your neighbor and ask them to lend it to you. Restaurants also give out anything that they regard as waste and egg shells are one of the most common restaurant wastes that are easy to get and ask from these establishments. Continue reading →