Upon returning from the war against the Midianites, the Jews were instructed to purse the non-kosher food taste from each pot, pan and food utensil which had been taken as a spoil of battle. ...non-kosher taste demands a cleansing that is commensurate with how the non-kosher taste was originally imbued into the utensil. There is no shortcut to kashering. Likewise, there is no shortcut to cleanse ourselves of the things of the world which diminish us, no shortcut to rid ourselves of tarfus - physical or spiritual.
- Intro in Pairs; Cold-Use Keilim | Hechsher Keilim #1