A question about starting a business involving a restaurant serving organic baby food?

hi, my names megan and i have a 9 month old daughter. the majority of the time i make her organic baby food for her meals myself, rather than buying premade food at the stores. mainly i do this because it saves money for me and because she likes it a lot better. Ive been thinking for the past month or so that a great idea for a business would be to open a cafe style restaurant, selling predominantly organic baby food and some toddler food. I'd also stock a fridge full of organic juices and waters that id buy from vendors and most likely make some cupcakes, muffins and other snacks for hungry parents. but the specialty of this unique eatery would be the baby food. id like to start off small, since its hard gathering large amounts of money being a young single mother. i was thinking that id write up a proposal and take it down to some local health food stores or organic cafes/restaurants, meet with the owner of the store and propose to him or her that if they let me set up a table in a small area of their store and i sell my homemade organic baby/toddler food to the incoming customers, it would be beneficial to both the store owner and me. it'd get my name out for when i do eventually open my own business, it'd gain be some money, and it would also attract more customers to the store owner and id be willing to either split it the proceeds 60/40 or something like that. i plan to donate 5% of all proceeds to hungry children on long island. and i thought id bring lots of biodegradable small spoons so that customers could sample the food if wanted. id have a special of the day, and also the regular daily flavors. and in good time, id make out business cards and have them to give to each customer, and i would tack them to bulletin boards at local library's and grocery stores for exposure. now finally, my question..am i able to just set up a stand in someones store with their permission, or is their certain steps i have to take? im uming they'd have to be a business serving some sort of food already because i believe you need to have a board of health license or permission to serve food...also, if any one could give me advice or tips on how to go about this, i would be extremely grateful for that. if any one knows a good store/restaurant to start off asking for space to rent, id appreciate that. i suppose, im just generally looking for advice, and for a good place to start. thank you. -Megan