- Preheat oven to 175C. 
- Mix together maida, baking powder and baking soda. 
- In another bowl, beat together butter, condensed milk, vanilla and powdered sugar. 
- Add milk and vinegar and set aside. 
- Now add milk and dry ingredients in batches to the butter mixture. 
- Whisk until 80% combined. 
- Use a spatula to fold the batter. 
- Transfer it to a lined and greased 7” round cake tin. 
- Tap to level batter. 
- Bake in preheated oven for 35-40 minutes or until a toothpick inserted comes out clean. 
- Cool the cake for 5 minutes on a wire rack. Flip the tin, and remove the cake. 
- Let it cool completely before using.