What are good eggs?

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“Nest-laid,” “free-run,” “free-range” and “organic”: Egg cartons hold a lot of big promises about what’s inside and how they got there. We test the marketing on supermarket eggs, and ask companies if we can see for ourselves what the labels really mean for chickens and for you.

Hardly scientific, but it does show that people have many different tastes and considerations when choosing eggs.

What makes for good eggs? For that matter, what about good meats, good fruits and vegetables, and good processed foods?