From America's Test Kitchen
Pound cakes often turn out spongy, rubbery, heavy, and dry—and lemon pound cakes often lack true lemon flavor. We wanted to produce a superior pound cake (fine-crumbed, rich, moist, and buttery) while making the process as simple and foolproof as possible.
After less-than-successful results with a standing mixer and a hand mixer, we turned to the food processor to mix our cake. It ensured a perfect emulsification of the eggs, sugar, and melted butter (we found that a blender worked, too). Cake flour produced a tender crumb, but our cake was still a bit heavy. We fixed matters with the addition of baking powder, which increased lift and produced a consistent, fine crumb. Finally, in addition to mixing lemon zest into the cake batter, we glazed the finished cake with lemon sugar syrup—but first we poked holes all over the cake to ensure that the tangy, sweet glaze infused the cake with a blast of bright lemon flavor.
One 9 by 5-inch Cake, Serving 8
You can use a blender instead of a food processor to mix the batter. To add the butter, remove the center cap of the lid so it can be drizzled into the whirling blender with minimal splattering. This batter looks almost like a thick pancake batter and is very fluid.