Hello,
I think a simple,good looking website that works well on mobile phones/tablets is the best way to go. Navigation bar, Image slider with the pictures of food, design (we can add some photoshop effects once you deliever the pictures), some information about the type of food you make, specialities of the restaurant etc.
In navigation bar we should have the home icon, about us, contact us, how to find us, and if u want some more. In the footer we could add social media profiles like facebook/instagram (in my opinion it would be good to make instagram account).
Soft colors (something like light pink/blue/yellow or similar), maybe white background.
Regards, Nemanja.