It's always fun when my produce gal brings me something I've never seen before. Yesterday she had a mixed box of exotic citrus including the Australian Finger Limes. Very cool little things. You break them in half and squeeze the bottom and these little caviar-like nodules of citrus deliciousness come oozing out.
Just a few of these will add a nice like pop of tartness on top of an hors d'oeurve or any style of dish really.
And yes, that's a dime behind it to give perspective.