18 yr dog fussy with food. Alternative foods suggestions?

My 18 year old terrier mongrel is rapidly going off her food.
I understand that this is common inelderly dogs, however I would like to find some food besides dog biscuits that she will eat. At this time in her life, I am prepared to give her anything that she fancies.
She still has a great quality of life. She still enjoys her walks from 1 to 2 miles a day and the incontinent tablets work a treat!
She is on medication for a serious heart murmer and was not expected to live past 6 or 7 years old - but hey! I must have been doing something right. I put it down to cod liver oil daily!
Any suggestions - I have tried dried, canned ,prescription food etc.,
Thanks, I look forward to any ideas

Congratulations on your Oldie! Have you tried some of what you`re having (provided you`re not into salad)? My Oldie is really enthusiastic about our dinners.

You certainly must have done something right, that is a real achievement

I found my old boy (though he was nowhere near your girl's age) preferred really smelly food as he got older - how about some minced tripe and/or (not in the same meal ) sardines?