Sourdough Chocolate Cake

Name: Sourdough Chocolate Cake
Prep time: 20 min
Cook time: 45 min
Total time: 1 h 5 min
Cuisine: European
Ingredients: 225g (1 1/2 cups) all purpose flour; 70g (3/4 cup) cocoa powder; 1/2 teaspoon salt; 1 teaspoon baking powder; 1 teaspoon baking soda; 2 large eggs; 1 teaspoon vanilla extract; 187ml (3/4 cup) vegetable oil; 100g (1/2 cup) sourdough discard starter; 130g (2/3 cup) granulated sugar; 130g (2/3 cup) soft brown sugar; 250ml (1 cup) milk; 125ml (1/2 cup) hot strong coffee; 200g unsalted butter, softened; 320-375g (2 1/2-3 cups) confectioners sugar; 30g (1/3 cup) cocoa powder; 2-3 tablespoon milk or cream, at room temperature; 1/4 teaspoon salt; 125ml (1/2 cup) pouring cream; 150g dark chocolate, chopped