Vanilla Buttermilk Cake with Instant Fudge Frosting

INGREDIENTS

whole eggs (room temperature)

egg yolks (room temperature)

1 1/4 cups

buttermilk, room temperature

2 tsp

pure vanilla extract

3 cups

cake flour, sifted

2 cups

sugar

1 tbsp

plus 1/2 teaspoon (17 g baking powder)

1/2 tsp

salt

1 cup

2 sticks(227 g) unsalted butter, at room temperature

6 oz

quality unsweetened chocolate, melted and cooled

4 1/2 cups

confectioners' sugar (no need to sift)

1 1/2 cups

3 sticks(340 g) unsalted butter, at room temperature

6 tbsp

half-and-half

1 tbsp

pure vanilla extract