Author and A Brown Table blogger Nik Sharma grinds Darjeeling tea leaves into flour to add a layer of complexity to this easy-to-make cake that's featured in his book, Season. "Grinding the tea leaves before they go into the cake batter helps infuse the cake with their flavor," he says. "While the cake bakes, the baking soda reacts with the tannins in the tea to reduce any bitterness." The recipe below makes enough cake for 8 to 9 servings.