Preheat oven to 350 degrees F.
Sift 3 cups (more than recipe calls for) of all-purpose flour into a bowl.
Lightly spoon sifted flour into measuring cup. Level with smooth end of a knife. Pour into a separate medium bowl. Repeat for 2-3/4 cups. Pour remainder back into the flour container.
In medium bowl, whisk together prepared all-purpose flour, baking powder and salt. Set aside.
In large bowl, mix softened butter, sugar and eggs with an electric mixer until light and fluffy. Add eggs one at a time. Beat well after each addition.
Add pure lemon extract. Beat until well combined.
Add flour mixture and beat on low for ONLY 1 minute. Scrape bottom and sides of bowl.
Use a spatula or spoon to scoop batter from bowl into a greased 12-cup tube pan or Bundt pan.
Bake in preheated oven for 1 hour and 15 minutes. Adjust oven temperature if necessary. Cool in pan for 15 minutes before removing and inverting onto a wire rack to cool completely.
After removing from oven, place "cake in the pan" on a rack or a thick folded towel. Allow pan to stand at least 20 minutes. This will help the cake release from the pan without sticking to the sides or bottom.
Lightly tap pan on counter until the entire cake moves around easily. If it doesn't move, gently run a rubber spatula along the sides of the pan and around the tube to loosen cake.
Carefully invert on a plate or rack and allow to cool another 15 minutes.