[throwaway59582]

>Here's a classic for you, one of the early incidents which lead to this kind of regulation: https://en.wikipedia.org/wiki/1858_Bradford_sweets_poisoning

I don't see how said regulation would have helped in this case, the shop owner simply mistook fake sugar for arsenic, it's not like he decided to sell arsenic-flavored candies.

[not_your_vase]

Correct. He was selling candies filled with (what he thought was) gypsum. Yum.

(He didn't mix up the sugar with arsenic. He mixed up the gypsum.)