That is one of the questions that I ask potential new clients/customers. Most do not seem to know, or care. So I take a few minutes to point out that the food we buy in the grocery store comes from around the globe. Think of all the hands that have touched it before we eat it. Yuck!
Sure most of us wash our food, but does that really do the trick? Food grown with dirty water (by that I mean water containing pesticides, nasty chemicals, and who knows what else) is still an integral part of the food.
Then the food is transported to us, on average 1500 miles according to some sources, in a frozen or refrigerated state. At the store, frozen produce is then thawed and set out on the shelf for us to look at. Refrigerated food is allowed to warm up to room temperature. When we get it home, we re-refrigerate it. No wonder if looks and tastes so bad.
When you buy locally grown food, you know what you are getting. Go visit your farmer and see how the food is grown. See who is touching your food. See how the food is transported.
Know where your food comes from!