In mid-19th-century England, three things became quite common: the five o’clock tea ☕️, sugar consumption 🍰, and the use of food coloring🍦. This mix could become quite deadly when an afternoon tea hostess would buy ready-made sugar cake decorations. Why? At the time the most vibrant and thus the most eye-pleasing food colors were achieved by adding some pretty dangerous stuff, e.g., copper sulfate for blue, copper arsenite for green, or mercury sulfide for red. ☠️☠️ Also lead was added to achieve different shades depending on the formula. ☠️ Many people got seriously sick and some even died because of the coloring in their sweets. In 1851 nearly 200 people were poisoned by colored lozenges, 17 of whom fatally. This and other fatal events finally led to the passing of the Adulteration of Food and Drink Act of 1860, one of the first focused on food safety.
I found inspiration for this comic in this book all about food and customs around it: The Art of Dining