Kashering
Kashering means spiritual decontamination. It is the process of re-koshering items previously used. It can be used to make items fit for use on Pesach and can also be done to change an item’s status from milk to parev and meat to parev. The material from which the item is made, as well as how it became non kosher determines if/how it can be kashered. Generally, the item is kashered in the same way it is used. For example: a braai grid that has been used on an open fire needs to be kashered with fire at a high temperature, or a spoon that has been used in liquid needs to be kashered using boiling water.
View the full guideThere are two basic methods of Kashering
Method 1 Fire
There are two processes:
1LIBUN GAMUR
Until red hot or equal to that temperature
2LIBUN KAL
Light burning
Method 2 Water
There are three processes:
1HAGALAH
Immersing items into vigorously boiling water, i.e.water with large bubbles on the surface
2IRUY 1
Pouring boiling water from a kettle while it is still boiling
IRUY 2
Pouring boiling water from any container in which it was boiled