Sift about one - third of flour mixture over chocolate mixture and whisk until combined; whisk in sour cream until combined, then sift remaining flour mixture over and whisk until batter is homogenous and th
Sift about one - third of flour
mixture over chocolate mixture and whisk until combined; whisk in sour cream until combined, then
sift remaining flour mixture over and whisk until batter is homogenous and th
sift remaining flour
mixture over and whisk until batter is homogenous and thick.