I have the wordpress theme called "The restaurant" where I can make the menucard. The only thing I need is to add a button such as "add to cart"or "add to the order" next to each meal or item of the menu.
Please check this link: http://www.redfactory.nl/themes/therestaurant/take-away-menu/
It should look exactly like the link shows, the thing is that I don´t know how to do it myself.
The consumer will have also the possibility of not buying /or paying) but sending onñy the information of the order instead.
The consumer also can order without logging in without any username nor password. The website only will ask some key information such as name, email address, address, telephone number, etc.
I don't pay in advance due to bad previous experiences.
I use Paypal.