The old, pre-2002 https://www.just-food.com/news/uk-mars-re-branding-offers-co... UK Mars bar (not to be confused with whatever thing the US had) was both horrifying and glorious, an incredibly heavy and filling thing made of thick chocolate and thick caramel. A full-sized Mars bar and a glass of full-cream milk really was an entire meal. The post-2002 bar is a silty nothingburger, a variation on the Milky Way bar https://en.wikipedia.org/wiki/Milky_Way_(chocolate_bar) which has no business advertising itself as a Mars. I really hope that this one finds its way to a food-science lab so that its contents can be properly documented and recreated.