I tried to bake a cake in a Pressure cooker

Since I don't have an Oven or a Microwave, baking is not so easy for me. I saw this video on YouTube sometime back where this lady bakes a cake in a Pressure cooker. I thought of giving it a try since it was Easter and I wanted to bake. As per the YouTube video, she takes All purpose flour, Oil and Milk to create a batter. Once the batter is made, she puts it in the pressure cooker and bakes it on a low flame for 35 mins. (to be precise) Once it's baked, she pours some vanilla on the cake and some crushed chocolate which makes it a Vanilla Chocolate cake. I'm certainly unfortunate because I didn't have the All-purpose flour, neither did I have any Chocolate or Vanilla and due to lock-down it's very difficult to buy any essentials as most of the grocery shops are running out of stock. So instead of All purpose flour, I took Wheat flour to make the batter. As I didn't have Vanilla or Chocolate, I knew my cake wouldn't be int...