Foment? To instigate or stir up
ETA: "Adams has often been described as a brewer, but the extant evidence suggests that he worked as a maltster and not a brewer."
Definitions by Google.
> Ferment: 2. incite or stir up (trouble or disorder).
> Foment: 1. instigate or stir up (an undesirable or violent sentiment or course of action).
I still think ferment sounds totally wrong too.