Certainly cooking dishes are not purified with blood.
Kosher practice purifies them with high temperature.
Those were add-ons not prescribed in scripture.
Hebrews 9:22 .....and without the shedding of blood there is no forgiveness of sins.
Suffering does not result in the forgiveness of sins. God does not forgive our sins after we're suffered enough to someone pay for them.
If that were possible, Christ died for nothing.