Apples and Mustard

One day while eating his lunch of hot dogs and apples, our boy decided to try dipping his apples in mustard. Apparently he really liked it. Now, anytime that we pull out the apple slices, he will have nothing to do with them until he pulls out the trusty bottle of mustard. It must be an acquired taste, because he still shutters after the first bite. We figure if he keeps eating the apples, we'll keep supplying the mustard.