(38) The ‘one need not worry’ is not referring to the case of water not being able to flow out, for the meat becomes forbidden in such a case even post facto.
(39) Salt can not bring out taste absorbed in a vessel. However, a vessel can absorb taste from the salt, and will come out through cooking. This is why one may not use the vessel for boiling hot foods. One may use the vessel for cold items, even if it was not washed out
(40) Because salt won’t bring out taste.
(41) We are speaking of a case of salting for preservation in which a lot of salt is used for a long period of time. If it sat for twenty four hours on such a vessel it is forbidden because of kavush k’mevushal and we assume that it absorbed taste from the vessel. Therefore we must be speaking of a case in which it is in this vessel for less than 24 hours.