food quality

Pop Quiz: You open the refrigerator and pull out a tasty treat. It’s May 6 and the label says: “Use By” May 4. Do you eat or toss? And what if it said: “Best if Used By”? Although you think you know the correct answer, most of us don’t.
"Use by" and "sell by" labels are not about food safety, although it's easy to be confused by them. In fact, they're only pointers about when a food's quality might not be at its peak.
In our obesity-obsessed country, people may be forgiven for using primarily calorie content for choosing which foods to consume.