This is because you

来源: jassco 于 2021-12-02 10:18:01 [] [旧帖] [给我悄悄话] 本文已被阅读： 次 (381 bytes)

have stainless boiling pots made of cheap stainless steels. This corrision will happen if its chromium level is too low.

If you have a pot made of a premium food grade stainless steel, you won't see rusts as the "rust" (film - Chromium oxide) on stainless steel is clear and invisible.

Best regards,

Alex

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