What you need:
1 1/2 cups all purpose flour
1/2 teaspoon salt
1 teaspoon baking powder
6 tablespoons butter, softened
1 cup sugar
1/2 cup milk
Grated peel and juice of 1 Lemon (or 4 tablespoons Lemon Juice)
1/4 cup poppyseeds
1/2 cup powdered sugar
Preheat oven to 350 degrees. Grease and flour a 9-by-5 inch loaf pan.
Whisk together flour, salt, and baking powder. In a large bowl, cream butter. Add sugar and eggs and mix until light and fluffy. Add milk alternately with the flour mixture, starting and ending with the flour mixture; mix well. Add grated lemon or 4 tablespoons of lemon juice and poppyseeds.
Pour batter mixture into the prepared pan. Bake for about 45-60 minutes or until a toothpick inserted in the center comes out clean. Let bread cool in pan for about 5 minutes.
Mix together 3 tablespoons lemon juice and powdered sugar to make a glaze. Remove the bread from the pan. Pour the glaze over the warm bread (poking holes in the bread first so that the bread absorbs more of the glaze).