What is the difference between 'sell by' and 'best-by' dates on food?

While some say "use by" a specific date, others say "sell by" the posted date. But what is the difference? #press

https://thehill.com/changing-america/well-being/prevention-cures/4150830-what-is-the-difference-between-sell-by-and-best-by-dates-on-food/?utm_source=press.coop

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