Frankly, what you want is insane. The reason we have laws and regulations for food content is to avoid killing people with botulism, salmonella, E. coli, lead, mercury, arsenic, cyanide... — basically all the things people used to die of before they got sick of dealing with food-borne illnesses and poisoning and demanded regulations.

The regulations aren't even that onerous. I helped my wife start a food business, and the costs are not anything exorbitant; commercial kitchen space, testing for shelf-stability, and some local certifications. It was profitable enough for someone who is selling as a hobby, but anyone serious would buy or build a kitchen to reduce ongoing costs and boost profit.