Here they are 'relishing' the last two from the jar.
But check out this video of Malia...yes, she is dipping her pickle in k-e-t-c-h-u-p (well, that and BBQ sauce). When she did it the first time, she had a not-so-pleasant look on her face. But from then on, it seemed to be all good as the video shows.
(I couldn't figure out how to rotate the video, so this is how you get it. Oh, and also -- for some reason it's only showing the first 4 seconds of the video, even though it was much longer...but you'll get the gist of it)