Combine flour, sugar, baking powder, salt and lemon zest.
Using a pastry blender cut in butter until small pea shaped crumbs form.
Add in lemon extract and milk.
Stir until incorporated. Dough may be slightly sticky.
Place on a lightly floured surface and knead a few times. Form into a ball and flatten into a 8 inch disc.
Cut into 10 pieces and place on a parchment covered baking sheet.
Bake for 10-12 minutes at 400 degree F or until lightly browned around edges.
Remove and cool.
Mix together powdered sugar, juice of a lemon and enough hot water to form a good drizzling consistency (not much water)
Drizzle over scones.