Part 4/8:
Prepare Dry Ingredients: In a large bowl, sift together 540 grams of flour, 2 tablespoons of baking powder, and 2 teaspoons of salt.
Cream Butter and Sugar: In the bowl of a stand mixer, beat 152 grams of softened salted butter and the zest of two oranges until combined. Gradually add 3 cups of granulated sugar and mix until light and fluffy.
Add Eggs and Sour Cream: Incorporate six eggs one at a time, scraping down the bowl as necessary. Mix in 160 grams of sour cream for added moisture.
Combine with Flour and Juice: Gradually alternate between adding the flour mixture and 2 cups of fresh orange juice to the creamed mixture on low speed until fully combined but being careful not to overmix.