From the warm lemon flavor to the impossibly moist, pillowy texture to the ultra-luxe lemon icing, this version is even better than the one from Starbucks. You’ll mix lemon juice, lemon zest, and a full tablespoon of lemon extract into the batter, resulting in a sunny yellow cake bursting with lemon flavor. To top it off, you’ll combine more lemon juice with powdered sugar for a luxe lemon icing that covers the top of the loaf.