Clean Eating

When someone makes the choice to eat "clean" they are choosing to eliminate all  processed foods and extra additives from their diet.  Basically, you are  choosing to eat whole, unrefined foods.  

The basics of eating clean  include - eating lots of fruits and vegetables.  These are straight from  nature - the idea is to stay away from anything that may have been altered in  any way.  

Include meats, however; "whole" meats that you have  chosen straight from the butcher or prepared yourself.

Enjoy whole grains - these are grains that are still complete and haven't been
broken down in any form.  Examples include: brown rice, whole wheat and  other whole grains.  You will have to get used to reading food
labels.  Just because a product says its "whole grain" does not mean it  is.  It also does not mean they have not added a bunch of other ingredients
as well.  

Eat fewer ingredients - try not to purchase items with more than 4-6 ingredients  in the ingredient list.  Also, be sure you recognize every
ingredient.  If you can't pronounce it, you probably shouldn't put it in  your body.
Information from Fitday