Preheat the oven to 160°C Butter a loaf pan and line it with waxed paper. In a medium bowl, combine the flour, baking powder, and salt.

In a mixer, cream the butter, add sugar and mix. Add the eggs one at a time, then add the vanilla and lemon extract followed by the lemon zests.

Mixing after each addition, add the dry ingredients and 1/4 cup of the lemon juice to the batter mixture. Mix until just smooth.

Pour into the prepared pan and bake for around 1 hour.

Make the glaze:.

In a small bowl, stir together the juice of the lemons and add powder sugar as per your taste, mix until the sugar is dissolved.

When the cake is done, let it cool in the pan 15 minutes. Take it out of the pan and peel off the waxed paper.

Using a pastry brush, spread the syrup all over the top and sides of the cake and let soak. Cut into thick slices and soak each slice in the syrup. Let cool at room temperature or wrap each slice in plastic wrap and put in the refrigerator. Serve at room temperature.