1) Melt the cacao powder in hot water for 5 minutes before adding it to the cake batter. 2) Do not use butter, not even vegan butter or coconut oil, but just little vegetable oil. 3) Do not over-mix the batter. Instead, mix it with a spatula for a few seconds. Don't worry about lumps. 4) Add the baking powder last. 5) Prep a springform pan and preheat the oven to bake your cake immediately after mixing the ingredients.