I had an appointment with the vet's dietitian. That was disappointing. I don't think I want to feed Shreddy, a cat and obligate carnivore, strawberries, spinach, or pumpkin.
She recommended the same book as the other vet clinic. It's a paperback book that costs ~$27 and can only be bought from vets. The recipes require "Hilary's Blend" supplement, which is expensive and can only be bought from vets. This is starting to look like greed to me.
I think I'll go with PF's suggestion: Making Cat Food by Lisa A. Pierson, DVM :: homemade cat food, cat food recipes
From all the reading I have done, and I've done a lot, this vet sounds the most sensible.
Hard to imagine any cat being interested in vegetables or fruit TL. (Though my old cat Tweaky, had a very odd interest in raw potato peelings.)
Not sure how you get your average cat interested in something that isn't meat or fish based.