I dnt know abt home made cream but u can use amul cream too for the same u jst need to add sugar n vanilla.
We get whipping cream in the supermarkets dea, we just need to beat that with the electric beater. But if u want a homemade one, you can opt for buttercream frosting dea. For this you need caster sugar about 2 cups and 3/4 th cup butter and just a tbsp of milk to help in beating. This is also a very gud frosting recipe. And as u know chocolate ganache recipe is der on BB and in many recipes on BB. you can check my cake recipes also for the ganache.