Remember the good old days when our school lunches would include PBJ's on soft white bread? About a year ago our kids were lamenting the fact that they never got that same white bread for the sandwiches in their school lunches.  I explained the usual set of reasons why - white bread has no nutrients, no fiber, etc.  But then my then-8-year-old daughter came up with an idea: "Dad, if you MAKE whi…