NYT Cooking: The recipe for this cake, adapted from "Sweet" by Yotam Ottolenghi and Helen Goh, first appeared in an article written about Ms. Goh when she ran her cafe, the Mortar & Pestle, in Melbourne, Australia. Rather intimidatingly for her, the headline for the article was "World’s Best Chocolate Cake." It could actually be called lots of things: “world’s easiest cake,” possibly, requiring nothing ...