NGREDIENTS:<br />1 cup all-purpose flour <br />1/2 cup cocoa powder (unsweetened)<br />1 tsp baking powder <br />1/2 tsp baking soda <br />1/2 tsp salt<br />1 cup white sugar <br />2 large eggs<br />1 cup evaporated milk <br />1/4 cup vegetable oil <br />1 tbsp white vinegar <br /><br />CHOCOLATE SAUCE:<br />1 cup evaporated milk<br />1/2 cup sugar <br />2 tbsp all-purpose flour <br />4 tbsp cocoa powder (unsweetened)<br />1/4 cup all-purpose flour<br />2 tbsp melted butter (unsalted)