... build labelling software, so I have read more food regulations than is healthy. Three that caught me off guard: Mexico puts black octagonal warning seals on the front of the pack (excess sugar, excess sodium, and so on). A product can need four of them at once. The UK traffic-light scheme colours fat, saturates, sugars and salt per 100g, but the thresholds for drinks are different from solids, so the same recipe can be amber as a sauce ...