crueller's are just too plain for me!
My favorite donuts are jelly.
Of course I thought it would be an easy answer, but now i can't decide if i like granulated sugar outside or the powder best. And as I'm sitting here debating, I am remembering this Krispy Kreme version I had which was glazed on the outside and jelly inside...
a cruller is a "stick" of donut batter, rather than being a round with a hole cut into as a traditional donut is. a cruller is generally filled with something as well.