The flying duck suggestions

As your manager, I recommend cut cost. Try to reduce the payment of the staff and then with this money you could invest in advertising.
Doing this, you will notice how your company grows, and then you may expand your business sucessfully.
I suggest that one kind dish be the main dish of the restaurant.
I know that the risk is huge, but I´m sure that you would be happy with the results.

Make suggestions is important in every company in the world, you need consider all the risk and alternatives that you have. I think that with this kind of activities I will do it well someday.