Actually, Cody, a 3-year-old, 65-pound Rhodesian Ridgeback/Golden Lab mix (we think), likes just about anything edible. When I cook, she sits and watches like a hawk, waiting for stuff to fall on the floor -- except onion, which she won't eat.
Her favorite is Parmesan cheese -- when I take a chunk out of the refrigerator to grate, she comes running from wherever she is in the house and spends about 15 minutes licking the floor after I'm done.
We keep containers of peeled carrot chunks, sliced apples, and orange sections as treats for her.