Preheat oven to 350° F. Grease one 9” Bundt pan.
In a medium mixing bowl, mix together flour, baking powder, and salt. Set aside.
Beat butter, lemon zest, and sugar until light and creamy.
Add eggs, one at a time, mixing well after each addition.
Mix together milk, lemon juice, sour cream, and vanilla. Alternatively add milk mixture and dry mixture, mixing on low until just combined with each addition, until all ingredients are added. Don't over mix.
Pour batter into Bundt pan. Bake 50-60 minutes, until toothpick comes out clean in the center. Cool 15-20 minutes in the pan before inverting onto a cooling rack to cool completely.