I'm just outside NYC. I read somewhere that as long as it is not more than 4 times per month, you are o.k. without permits. It seems to be a double edged sword. Lots of people are experimenting with this. There are a number of really successful underground supper clubs in Brooklyn, and in Europe, it is a huge thing. But it is hard to market something that is supposed to be so secretive if that makes sense.
Yep, social media. But, be careful. I don't know where you live or if you are in the US, but, most states in the US frown upon unregulated commercial endeavors that involve food served from an unlicensed home kitchen.
If you are not careful, you could land yourself in some very serious and very expensive hot water.
I read somewhere that as long as it is not more than 4 times per month, you are o.k. without permits.