Pear, chocolate and walnut cake

Name: Pear, chocolate and walnut cake
Prep time: 30 min
Cook time: 1 h
Total time: 1 h 30 min
Yield: 8 servings
Ingredients: 16 gr of Baking powder; 80 gr of Dark cooking chocolate; 4 Medium egg; 3 Pear conferences; 250 gr of Plain flour; 50 ml of Semi skimmed milk; 65 gr of Unsalted butter; 80 gr of Walnuts; 170 gr of White sugar