2cups sugar
4ounces unsweetened chocolate
1stick unsalted butter, plus more for greasing the pan
2cups all-purpose flour, plus more for dusting the pan
2teaspoons baking soda
1teaspoon baking powder
1teaspoon salt
1cup milk
1teaspoon cider vinegar
2eggs
1teaspoon vanilla
1 ½cups Nestle's semisweet-chocolate chips
1 ½cups sour cream, at room temperature
Go here for the rest.
