cooking spray
1-1/2 cups unbleached all-purpose flour
1/3 cup unsweetened cocoa powder (more for dusting)
1 teaspoon baking soda
1/2 teaspoon salt
1 cup granulated sugar
1/2 cup vegetable oil
1 cup brewed coffee or cold water (I used coffee for a richer taste)
2 teaspoons vanilla extract
2 Tablespoons white vinegar
16 ounces fresh strawberries, hulled and sliced
1 Tablespoon sugar
1 Tablespoon balsamic vinegar
2/3 cup balsamic vinegar
3 Tablespoons sugar
1.5 ounces bittersweet chocolate bar, chopped
1/4 cup mascarpone
1/2 cup heavy cream
2 Tablespoons sugar
1/2 teaspoon vanilla bean paste or vanilla extract