Preheat the oven to 375ºF (190ºC).
Line 2 cupcakes pans with 14 cupcake liners. Set aside.
In a medium bowl, add Domino® Sugar and lemon zest. 1 cup Domino® sugar, 2 tablespoons lemon zest Work the lemon zest into the sugar with your fingers to release the oils.
In the bowl of a stand mixer, beat the butter and lemon sugar on medium speed until light and fluffy, 2-3 minutes.
½ cup unsalted butter
Scrape the bottom and sides of the bowl, then add the eggs and vanilla. Mix on medium speed until evenly incorporated.
2 large eggs, 2 teaspoons pure vanilla extract
In a separate bowl, whisk together the flour, baking powder, baking soda and salt.
1 ⅔ cups all-purpose flour, 1 ½ teaspoons baking powder, ½ teaspoon baking soda, 1 teaspoon kosher salt
Add the flour mixture to the wet ingredients.
Turn the mixer on low and slowly add in sour cream and milk until there are no longer dry spots of flour.
½ cup full-fat sour cream , ¼ cup whole milk
Stir in lemon juice just until evenly incorporated.
¼ cup fresh lemon juice
Fill the cupcake liners ¾ of the way full.
Bake for 5 min in the preheated oven then reduce temperature to 350ºF (177ºC) and bake another 10-12 minutes.
Allow cupcakes to cool in pans for 15 minutes, then transfer to wire rack to cool completely while you prepare the frosting.