The Best-Best Chocolate Cake

Name: The Best-Best Chocolate Cake
Prep time: 45 min
Cook time: 50 min
Total time: 1 h 35 min
Cuisine: American
Ingredients: 2 cups (300 g) unbleached all-purpose flour; 1 tsp baking soda; 1 tsp baking powder; 1/2 tsp salt; 2 eggs; 2 cups (420 g) sugar; 1 cup (250 ml) buttermilk; 1/2 cup (125 ml) canola oil; 2 tsp (10 ml) vanilla extract; 3/4 cup (75 g) cocoa powder; 3/4 cup (180 ml) strongly brewed coffee, warm; 1 3/4 cups (430 ml) 35% heavy cream; 2 tbsp (30 ml) corn syrup; 16 oz (450 g) dark chocolate, chopped