Preheat the oven to 340°F (170°C). Grease a 7 inch loaf pan or line the pan with parchment paper
Wet Ingredients: In a medium bowl, add the sugar, egg, melted butter, yogurt, lemon juice and lemon zest. Manually mix until combined.
Wet + DryIngredients: Sift the cake flour, baking powder and salt onto the wet ingredients mixture. Mix to combine, stop as soon as no more raw flour is visible.
Pour in the Pan: Spread the batter into prepared loaf pan. Bake for 33 – 35 minutes. Baking times vary, so it is more or less. Check at 30 minutes.
Cool: Leave in the pan for 10 minutes then remove and transfer in the coolingrack. Let rest another 5 minutes before slicing.
Optional Glaze: mix 1/3 cup icing sugar with 2 3- teaspoon lemon juice. Stir until the sugar is dissolved. Adjust the consistency by adding more lemon juice for thinner consistency or more sugar for thicker consistency.