Preheat oven to 325℉.
Using a KitchenAid stand mixer or an electric hand mixer, cream together butter and sugar.
Next, while mixing, add one egg at a time, letting each one incorporate into the batter before adding the next one.
Once all eggs are incorporated, add remaining wet ingredients (milk, sour cream, lemon rind, and vanilla extract).In a separate bowl, mix dry ingredients together (flour, baking soda, and salt).
While mixing wet batter, slowly add dry ingredients until everything is mixed together.Pour batter into a greased bundt pan. If you prefer to use a loaf pan, this recipe will make approximately 2 loaves and cooking time will vary.
Bake for approx 1 hr 10 minutes, or until toothpick comes out clean.