The right props can bring a simple food dish alive. Some food types like fast food is dull and lifeless so choosing the right props of fresh fruit, vegetables, plates, candles etc will make the dull become magic. To be s good food photographer you must have a special eye and flair for design. if you have this skill naturally you will fly.
If you do a lot of food photography then shopping at second hand markets can be a great way to build your box of props. You can pick up expensive items like large pots and dishes and vases for a few dollars and a smile. If you do not do much then you may have to go shopping for what you need and bill the client!