Sour Cream Black Fudge Loaf Cake

• 3 tbs sifted unbleached
• 2 eggs
• 240 ml sour cream
• 220 gr brown sugar (light)
• 100 gr semisweet chocolate
• 65 gr chocolate bread crumbs
• 65 gr butter (unsalted room temp)
• 60 gr unsweetened chocolate
• 30 gr dry instant expresso
• 30 ml boiling water