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Dukes Bourbon biscuits are a budget-friendly chocolate sandwich biscuit popular with children and adults seeking an affordable sweet snack. The product is ultra-processed (NOVA 4), with over a third of its weight being added sugar (34g/100g) and a calorie-dense profile of 479 kcal/100g. Most concerning is the cocktail of six colourants — including tartrazine (E102), sunset yellow (E110), carmoisine (E122), and brilliant blue (E133) — all synthetic dyes linked to hyperactivity in children and allergy risk, with E122 (carmoisine) banned in several countries. The single most useful thing a consumer should know: this product's long list of synthetic azo dyes makes it particularly unsuitable for children, despite being heavily marketed toward them.