Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
This is exactly what I was looking for. I’m currently using this to put in my coffee because Nescafé discontinued my favourite Coconut Latte so now I use this with just regular latte and it’s perfect. Will have try try this in a cocktail one day soon.