With treasures, there are two pages, have you checked both?
The meat pot is something different. Are you sure that there is no amphora in your kitchen which will give you meat if you break it?
I only have one page of treasures so far Xiagan as I'm not that far into the game and no there isn't an Amphora in the Kitchen just the pots that were there at the start. Perhaps I haven't found the pot yet then? But I do know for certain that I found the treasure , and that it said that it was transfered to my home.
So far I have, the pennant, the Helmet, The Stone Head, The Garden and the Little Statue, not enough to fill a page yet.. I will try going back to Mythala City and check to see if by some strange quirk it has reappeared again and keep looking for a pot?