A 12-year-old girl died after drinking a Twix milkshake at a London cafe, according to an inquest that concluded in August 2023. The girl, Mia Shay St Hilaire, suffered a fatal allergic reaction. The inquest found that the blender used to make the milkshake was not cleaned. The cafe is located in London. The incident occurred in August 2023. The blender was not properly cleaned before use. The milkshake contained allergens. The allergic reaction led to the girl's death. The inquest was held to determine the cause of death. The cafe was not aware of the risk. The blender was shared between multiple customers. The milkshake was made with ingredients that caused the reaction. The family has not commented publicly. The case highlights food safety concerns. The incident is under review by health authorities.