01 -
Preheat the oven to 163°C. Grease and flour a 23x13-centimetre loaf pan, ensuring all interior surfaces are evenly coated.
02 -
Combine softened unsalted butter and granulated sugar in a mixing bowl. Beat until the mixture is light and fluffy, ensuring even aeration.
03 -
Incorporate the eggs one at a time, beating thoroughly after each addition to fully emulsify the mixture.
04 -
In a separate bowl, whisk together all-purpose flour, baking soda, and salt until evenly blended.
05 -
Whisk together sour cream or Greek yogurt, fresh lemon juice, lemon zest, and vanilla extract in another bowl.
06 -
Add the dry ingredients to the butter mixture in alternating additions with the sour cream mixture, beginning and ending with the dry ingredients. Mix on low speed, just until incorporated. Avoid overmixing.
07 -
Toss the fresh blueberries with 16 grams all-purpose flour to prevent them from sinking during baking.
08 -
Gently fold the coated blueberries into the batter until evenly distributed.
09 -
Pour the batter into the prepared loaf pan and smooth the surface with a spatula.
10 -
Place in the preheated oven and bake for 70–80 minutes, or until a skewer inserted into the centre emerges clean.
11 -
Allow the cake to cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before glazing.
12 -
Whisk together powdered sugar, lemon juice, lemon zest, and milk or heavy cream in a bowl until the glaze is smooth and pourable.
13 -
Drizzle the lemon glaze over the cooled cake, allowing excess glaze to drip down the sides. Let the glaze set before slicing.