Preheat your oven to 350°F (175°C).
Grease a loaf pan with butter or cooking spray and lightly dust it with flour.
In a medium bowl, whisk together the all-purpose flour, baking powder, and salt until well combined.
In a large mixing bowl, beat the unsalted butter and granulated sugar until light and fluffy.
Add beaten eggs one at a time to the butter mixture, mixing well after each addition. Then fold in the sour cream along with meyer lemon juice and zest until fully combined.
Gradually add the dry ingredients to the wet mixture, mixing just until incorporated.