[nitwit005]

This went straight from medieval guilds to the 1920s, but actual bread mass production started in the Victorian era, and people did have a big negative reaction to that. They adulterated bread in ways that poisoned consumers during that period, which was a tad unpopular.

That drove consumers to some curious brands: https://en.wikipedia.org/wiki/Aerated_Bread_Company

[DANmode]

> They adulterated bread in ways that poisoned consumers during that period, which was a tad unpopular.

Consumers paying attention to how products impact them. No kiddin’.

[margalabargala]

Specifically, copper sulfate was added to flour to slow the rate of fermentation. Highly toxic.