Preheat oven to 325 and lightly grease a 9x5 loaf pan with butter. Dust pan light with flour and set aside.

In a bowl beat butter, sugar, lemon zest, lemon juice, and vanilla for 3 minutes until light and fluffy. Add sour cream until incorporated. Add eggs one at a time, mixing to combine after each addition.

In another bowl whisk together flour, Baking powder and salt. Gradually add dry ingredients to wet ingredients. (Fold in blueberries or poppyseeds-optional). Toss blueberries lightly in flour before adding to batter.

Bake 325 for 1 hour or until top is golden brown. Remove from oven and allow to cook for 20 mins. I’m a sauce pan, combine lemon juice and sugar. Once sugar has dissolved, allow to gently simmer for 2 minutes and remove from heat. Using a toothpick, poke cake lightly with holes all around cake. Brush syrup around top and sides of cake. Allow to cool for an hour before icing cake.

Whisk together powder sugar vanilla bean, milk and salt. Slowly pour over cake and allow to sit 20 minutes to harden before serving.