TIL that its only a tax > https://sealk.org/kosher-certification-cost/ Also, my medieval historian wife informed me that the jews were blamed a lot for the black plague spreading because they never seemed to be as affected as others, ergo, "they must be behind it." Though they likely had a large part in spreading it since they hate goyim, the most likely scenario was that their kosher and other food/drink preparation methods led to a decline in plague since it was a few degrees 'cleaner' than the other peasants. > https://sealk.org/kosher-standards/