Died-and-went-to-heaven Light Chocolate Cake

• 2 eggs
• 1 recipe by the toronto star
• 300 ml buttermilk
• 240 gr strong black coffee (hot)
• 220 gr packed brown sugar (light)
• 220 gr all purpose flour
• 200 gr granulated sugar
• 65 gr unsweetened dark cocoa
• 60 ml vegetable oil
• 9 gr vanilla