Steamed Moist Chocolate Cake II

Today is my FIL birthday, time flies fast. Recapping my bake last year for him, this would be my 2nd birthday cake I baked for him since. What's different this year was, he has lost quite a bit of weight due to his stroke and age more. Our wish for him is to get well and stay strong. It's a pain to see what he has gone thru'.
I'm using my previous Steamed Moist Chocolate Cake recipe with ganache frosting as recommended by Cookie from Happy Cup

Here's the half portion of the chocolate frosting:-
80g semi sweet chocolate
90ml heavy cream
1/2 tbsp unsalted butter (room temperature)


Method
Place the chopped chocolate in a medium sized stainless steel bowl. Heat the cream and butter in a small saucepan over medium heat. Bring just to a boil. Immediately pour the boiling cream over the chocolate and allow to stand for 5 minutes. Stir until smooth.

Let the ganache sit at room temperature until slightly firm (about one hour, due to time constraint I shorten the process and use water to cool down ganache) and then beat the ganache until creamy smooth and light. With an offset spatula or knife spread the ganache over the cooled cake.