Then you could even have a 100% "open source" product label when all the ingredients and sub-ingredients you used were also "open source".
You may ask: why would anyone other than paid food inspectors be interested in checking out those places? For one, it can be very educative to take your kids to show them how things are made. If you have allergies you may be interested in double-checking claims. It could also be an alternative fun thing for people into geocaching, for example to help "complete" the "100% open source" label for a given product.
You may also ask: why would anybody in the food industry be interested in making their food open source? Why would they want to give up their trade secrets? Well, for one not every product has to be mysterious: e.g., bread is bread, you just want to know if any suspicious additive has been used, and if your bread is good you want people to know it. It can be a marketing tool. You could prove that your product is 100% organic/local/kosher/gluten-free/peanut-free, etc., because all of the sub-ingredients have been verified to be the same as well, and you've crowd-sourced the work of verifying this.
Thoughts?