[Avodah] Kashering counters

[martin brody]

"I dont know any kitchens where hot [or even cold] chamets is put directly
onto the workbench surface.
As often as I have made this observation, the response is that stuff falls
off the platter onto the workbench.

Is that enough to require kashering the benchtop?

Meir G. Rabi"

No. Kli sheni doesn't absorb. And the pointless ubiquitous custom of
covering everything with foil comes from a time work tops were poorly made
wooden benches  and real chametz would fall through the many cracks and
present a real problem

Martin Brody
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