Step 1: Preheat your oven to 325°F (163°C) to ensure even baking.
Step 2: Grease and flour your pound cake pan to prevent sticking.
Step 3: Cream together the butter and sugar in a mixing bowl until light and fluffy, about 5-7 minutes.
Step 4: Add the eggs one at a time, beating well after each addition.
Step 5: In a separate bowl, whisk together the sifted cake flour and salt.
Step 6: Gradually add the dry ingredients to the butter mixture, alternating with 7UP soda, mixing until just combined.
Step 7: Stir in the lemon extract until evenly distributed.
Step 8: Pour the batter into the prepared pan and bake for 60-70 minutes or until a toothpick comes out clean.
Step 9: Cool the cake in the pan for 10-15 minutes before transferring to a cooling rack.
Step 10: Make the glaze by mixing confectioners sugar, 3 tbsp of 7UP, and 1 tsp of lemon extract until smooth, then drizzle over the cooled cake.