Preheat the oven to 180 C or 365 F for 10 minutes(Let it run empty)
Prepare a baking Pan by either buttering/oiling it or using parchment or butter paper.
Measure all the ingredients.
Add the vinegar to moderately hot milk, give it a mix and set aside. Let it curdle.
Mix the dry ingredients in a large bowl -flour, baking powder and Cocoa Powder
In another bowl, add the oil and the milk with vinegar and Sugar. Using a whisk, give it a good mix.
Add the dry ingredients to the wet ingredients. Scrap the bottom of the bowl to make sure there are no unmixed bits.
Add the hot water to the batter. Mix well.
The batter is a little more fluid than normal cake batter but don't worry about it.
Bake in a preheated oven at 180 degrees for 30-40 minutes.
Check if its done by inserting a toothpick in the cooked cake. If it comes out with liquid, it needs 5-10 mire minutes of baking. If it comes out clean or with crumbs, it's done.
Let it rest on the counter for 5 minutes. After which, take the cake out and cool it on a cooling rack.
Serve as it is or let it cool completely and frost it with Chocolate Ganache.