Brand registration Fssai. Before doing this you can do market validation by selling thru fb WhatsApp

Hey Harshad, Why don't you try https://play.google.com/store/apps/details?id=com.ablelo.stores&fbclid=IwAR1FFr9LaBgqQIxjzRgE8e2d5KxGWy6h93IEaqfEA2ROKDQesJSuuk8NBfY
You can setup your store and sell to customers near you, it's free of commissions or any setup fees. Do let me know if you face any issues😄

These guys kick butt when marketing their products. I found them in 2014 when they had only 4 or 5 products. Hopefully it'll give you some inspiration & ideas for marketing.

https://goosebumpspickles.com/

https://takedeepdive.com/starting-an-india-gourmet-store-how-to-get-your-first-100-customers/?fbclid=IwAR2srl2Ak6C-gZipqCzf7WajA2P5flcLHXE4DKBgk2adSSO_5_beNtvYM5s
Tried to answer all your questions. Let me know if I have missed anything. Also, do share, subscribe to more articles.

Have designed an entire course on taking your idea to income.
https://shabiawalia.podia.com/idea-to-income-blueprint

My wife has done more business than me reselling stuff on a 500 follower Instagram business account. Without registration, bank account or a website. Don’t worry about those things now.

My neighbour's 12yr old kid started her insta page some 2 weeks before and doing business.
They deliver using Dunzo and swiggy.

https://instagram.com/ks._.kitchen?igshid=17v3qye3wv8xg

Adding to your list, Intellect Property protection (trade mark registration etc), contracts with landlords, suppliers, vendors, service providers, customers, website terms and conditions, privacy policy, contracts with employees..

Two ways to go around it.

Create an instagram page and posting stuff using food hash tag but that's a long process. Other way is much shorter but it will require good hustle. You should create small. Packets of sample and start disturbing it to the neighbours and nearby resturants as free for tasting. If they liked you can give the restaurants a discounted price if they can plug in your packets to clients