Preheat & Prep: Preheat your oven to 350°F (175°C). Grease a 9x5-inch loaf pan and line it with parchment paper for easy removal.
Mix Dry Ingredients: In a bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
Infuse the Sugar: In a large mixing bowl, rub the lemon zest into the sugar with your fingers until it’s fragrant and slightly moist.
Mix Wet Ingredients: Add eggs one at a time, beating well after each. Stir in sour cream, lemon juice, milk, oil, and vanilla extract until smooth.
Combine: Gradually add dry ingredients, stirring until just combined. Don’t overmix—nobody likes a tough loaf!
Bake: Pour the batter into the prepared pan, smooth the top, and bake for 55-60 minutes, or until a toothpick comes out clean.
Cool: Let the cake cool in the pan for 20 minutes before transferring to a wire rack to cool completely.
Glaze: Whisk together powdered sugar and lemon juice, adjusting consistency as needed. Drizzle over the cooled cake and let it set.