Place your product in Facebook as link and write attractive text for package and you will find more customers on your product. There is nothing best way else marketing through internet marketing.
Make more friends on facebook Create a business page and share photos of your cakes Try to get more likes for these pics on your business page.
Si simply create a page for you business and promote through that ,with giving that page proper timing to engaging other users.The second way to promoting your business is higher a SEO expert he will take care of your page and will promote it with proper channel .
Just create a business page in FB and invite your friends to like the page. Then take it to the next step and start promoting it in a wider market.