Preheat oven to 350 degrees. Combine flour, baking powder and pinch of salt. Break eggs into food processor bowl. Add sugar and run metal blade till eggs swell and are pale yellow. Melt butter over low heat. Add flour and baking powder mixture to processor bowl and mix thoroughly. Add melted butter, grated lemon rind, lemon juice and mix. With blade running slowly, add milk.
Smear inside of 9x2 round cake pan liberally iwth butter, sprinkle flour and shake off excess. Pour batter (runny consistency) into pan. Bake in middle of oven for 50 minutes or till top is deep golden.