How to make chocolate mousse cake Made with gelatin

The exquisite ratio of gelatin and chocolate produced a unique smooth texture If you eat this, you can no longer return to ordinary mousse or pudding And it's a simple recipe that only mixes everything ingredients Toyo type(180×70×50mm) 100g　Sweet chocolate 15g　　Unsweetened cocoa powder 2 tablespoons hot water 250ml　milk 200ml heavy Cream(42％) 30g　　Granulated sugar 50g　　Condensed milk 8g　　 Powdered gelatin 40ml water Unsweetened cocoa powder