On FB there is a video and story about a guy who rode his bike across America. All his food came from Food-store dumpsters. He showed bags of edible food simply thrown away.
It reminded me of my part-time job at a store here in Germany. My family doctor owned the building that he leased and it was used as a grocery store. Part of the contract meant he was responsible for maintenance and that included the parking lot. Each Saturday morning I went to the store to pick up paper and do general cleaning. I soon discovered that early Saturday mornings the store would place all unsold produce outside the back door. That included day-old bread. I loaded the trunk of my car with radishes, carrots, assorted fruit, bread, etc. Before long on Saturday mornings a number of people from the area showed-up to gather food being thrown out. When the management saw this, it was prohibited. They contacted a local Convent and from that time forward the Nuns would come to pick up the food. I helped them load their cars and they told me that I could take whatever I wanted. The food they took was taken to the Convent where they fed homeless people. There set up a large buffet and anyone was welcome. The store moved out and the building was sold and my part-time job ended along with the free food.
I think that in most areas stores will not give the food away. Either there is some ordinance against it or it is against the capitalist principle not to get money for it and they would rather throw it out.
Considering the many homeless people in our country I like to think that someone or organization would take the initiative and collect the food. When we realize that there are so many people hungry and that good food is being thrown away, some action could be initiated to provide for the poor and stop the waste.