Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
Third time I've had some of these ice cream cups. This time the box is rattling like there's lots of crumbles, but haven't opened them yet. I have really enjoyed this treat which I haven't been able to enjoy for several years.