Simple Lemon Cake with Chocolate Ganache

Name: Simple Lemon Cake with Chocolate Ganache
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: American
Ingredients: 3 cups all-purpose flour; 1 tablespoon baking powder; 1 teaspoon baking soda; 1 teaspoon salt; 1 cup butter (2 sticks), softened; 2 cups granulated sugar; 4 eggs; 4 teaspoons vanilla extract; 1 cup sour cream; Juice and zest of 3 lemons; 1/2 cup sugar; 4 egg yolks; 6 tablespoons butter; 2 cups butter, softened; 5-6 cups powdered sugar; Zest of two lemons; Juice of one lemon; 1 teaspoon vanilla extract; 1 teaspoon lemon extract; 1 cup semi-sweet chocolate chips (I always use Ghiradelli); 1/3 cup heavy cream