Chocolate Orange Tart

Name: Chocolate Orange Tart
Prep time: 50 min
Cook time: 25 min
Total time: 1 h 15 min
Yield: 8 servings
Ingredients: 25 gr of Cocoa powder; 200 gr of Dark cooking chocolate; 240 ml of Double cream; 1 Medium egg; ½ tsp of Orange extract; 125 gr of Plain flour; 75 gr of Unsalted butter; 100 gr of White sugar