A little while ago I came across this pin for a "Striped Zebra Cake" and was intrigued by the concept. It's been years since I've made a marbled cake, and this technique looked like it deserved a try. St. Patrick's Day provided a good excuse to make the attempt.
One of the recipes I saw when I was looking for ideas had a chocolate ganache drizzle along the edge, so I gave that a try as well. I think I liked it plain better, or maybe with some green sugar crystals.