I personally can't be doing with having to put something extra in each time. When we first got Alfie, I started doing that to try and get him to eat it, but the trouble was that if he ate the extra and not all of the kibble, the kibble was then not completely dry and would not keep for later. Whereas if it's just kibble, and they leave it, you can give it to them for their next meal. Alfie gets an occasional teaspoonful of something or other, but it's as a treat, not to try to get him to eat it.