Preheat the oven to 350 degrees (325 degrees if using a dark loaf pan) and coat the inside of a 9x5 loaf pan with non-stick spray, or a silicone bread pan mat.
Add the flour, baking powder and salt to a medium sized bowl and whisk together. Set aside
1½ cups all-purpose flour, 2 teaspoons baking powder, ¼ teaspoon salt
In a large mixing bowl, add the eggs and sugar. Mix with an electric handheld or stand mixer on medium speed for 1 ½ to 2 minutes. Add the melted butter and continue mixing.
¾ cups granulated sugar, 3 large eggs, ½ cup unsalted butter
Add the sour cream, vanilla extract, lemon extract and lemon zest and mix until well combined.
½ cup sour cream, 1 teaspoon pure vanilla extract, 2½ tablespoons lemon extract, 1 tablespoon lemon zest
Slowly add the flour mixture, mixing on low speed until fully incorporated.
Pour the batter into the prepared loaf pan. Bake for 45-50 minutes.
When done, set the pan on a wire rack to cool for about 10 minutes, then remove the loaf from the pan to continue cooling.