You can choose to be a(n) Vending :
Brooklyn Business Tax Registration ( Business License) All businesses including home, online or mobile BUSINESS need a BUSINESS license because they are BUSINESSES.
selling pre-packaged snacks, would be home based with a portable venue booth,not sure about national or online. I would be selling from my home and online through a website. I would be making gourmet chocolates and candies and eventually would like to make other pastries such as cakes and flakey dough pastries ?