Stainless steel, plastic or porcelain dishwashers which have plastic pumps, parts and rubber hoses cannot be kashered for Pesach or the rest of the year.

Porcelain Enamel, Corian, Plastic/Formica, Silestone
CANNOT be kashered (for Pesach). Clean and cover for cold food. Cardboard or thick pad for hot food and utensils.

Granite, Marble, or Stainless Steel
Can be kashered by doing eruy roschim (purging through a hot water pour). Make sure that the material is a PURE granite, limestone, etc. Sometimes they are really “composites” which have plastic in them and therefore CANNOT be kashered.

Passover

Electric – Kashering a Glass, Corning, Halogen, or Ceran electric smoothtop range for Pesach use is a bit complex. To kasher the burner area, turn on the elements until they glow. The burner area is now considered kosher for Pesach. However, the remaining area that does not get hot is not kashered. The manufacturers do not suggest covering this area as one would a porcelain top, as it may cause the glass to break. Real kosherization can be accomplished by holding a blow torch over the glass until it is hot enough to singe a piece of newspaper on contact with the glass. However, this too may cause the glass to shatter and is not recommended. As the area between the burners cannot practically be kashered, it would be wise to have a trivet on the open glass area to move pots onto. In addition, it would be wise to […]