Originally Posted by
corky
I do the metal bowl & aluminum foil trick for keeping lettuce fresh and it is not that great with the more tender and delicate lettuces. And all the red leaf ones are the first to slime.
This is particularly an issue with the Costco packages. My theory (as this often occurs prior to the use-by date) is that these items have frequently been subjected to sub-freezing temps at points during transport/storage and the thaw makes those more tender leaves rot almost immediately.