英国卖过期食品怎么会是合法的呢？

还有一家叫Approved Food的网络食品销售商专门卖past sell-by(best before)date而闻名。据fsa（food standards agency)讲; "best before is an indication of quality rather than safety.Eating food past the best-before date does not necessarily put someone at risk form food poisoning,"

这个真不好理解。。。