Best food for old cat?

[zekele]

Hi,

Our 16 year-old cat has had some health problems with the thyroid, now thankfully under control with pills, and she's putting on weight again having lost a lot.

But she can't eat the dry cat food she used to prefer because she gets diarrhea, she's very picky over the tinned food too, prefering only fish-based varieties. Trouble is, the wet food dries up if you leave out too much, and we're usually away all day (we come home and the bowl has been empty for hours), and she wakes us up in the night for more! The vet is very nonchalant and not too helpful...

So what would you recommend as good food for an elderly cat which does little more than eat and sleep, which can keep her healthy and will be really easy to digest?

Thanks for your ideas!