The health department is in charge of food. they will come and inspect your kitchen and tell you what if anything needs to be done to get it up to code. You will also need a business license. you get that from your town.Also, make sure you re area is zoned for home business or commercial use. Your zoning inspector could also shut you down if you re not zoned for it.
taste testing with the public and having no one puke or dieother than that, probably nothingprobably need ingredients listed on package - call your local county health dept? and see if there are any requirements