The one constant among king cakes is that buried inside is a trinket, normally a plastic baby. Whoever gets the slice with the prize at a party, parade gathering or the office break room must buy the next cake. Between Jan. 6, the start of Carnival, and the Tuesday of Mardi Gras, this year Feb. 16, a high percentage of a New Orleanian's daily calorie intake comes from king cakes. With offices mostly empty and every party a potential super spreader event, Samuels does see more people buying medium and individual-sized cakes than large ones. Bywater Bakery, owned by baker Chaya Conrad, was prep...