Chocolate cake (Joshua Weishman)

Cake

• 2 cups (300g) all-purpose flour
• 3/4 cup (80g) cocoa powder
• 2 teaspoons (10g) baking powder
• 3/4 teaspoon (3g) baking soda
• 1.5 teaspoons (7g) fine sea salt
• 3/4 cup (150g) brown sugar
• 1 cup (220g) granulated white sugar
• 1/2 cup (120ml) neutral-tasting oil
• 2 egg yolks
• 2 large eggs
• 1 tablespoon (12g) vanilla extract
• 13/4 cup (450ml) milk (brought to a light simmer)

Frosting

• 4 cups (500g) powdered sugar
• 1/2 cup (55g) cocoa powder
• Generous pinch sea salt
• 1/2 cup (110g) softened butter
• Milk to thin (1/4 cup-1/2 cup)