This is the process we took when we first started recording our waste:
1st: We took all the food that our family and friends threw in the trash, and weighed it on a scale. They did this for 4 weeks.
2nd: Then we introduced our family and friends to our website and told them to use our website to decide whether to throw out the food or not. Then we weighed it on a scale They did this for 4 weeks also.
3rd: Then we found the difference between the two, and our website saved 19.4 pounds!