Ingredients: ½ cup of milk at room temperature½ cup of condensed milk at room temperature½ cup unsalted butter at room temperature2-3 tablespoon of sugar (or to taste)1 teaspoon vinegar1 teaspoon vanilla essence1 to 1& ¼ cup of all purpose flour1 teaspoon baking powder½ teaspoon baking soda¼ cup of cocoa powderOther requirement: 9X5 inch baking panparchment paper (optional) Cooking Spray (butter)Method: Preheat oven to 350F. Take a baking dish (about 9X5 inch) & grease/spray it with butter & line it with parchment paper. Spray some butter again on top of parchment paper too. This helps the cake to come out clean & prevents the cake from sticking to the baking dish. Now in a large bowl whisk together butter & condensed milk. Then add milk, sugar, vanilla extract & vinegar & whisk again. Sift all the dry ingredients together. Now add some flour at a time & whisk. Continue doing this till you have mixed all the flour & you have a lump free batter. Remove ¼ of the batter into another small bowl and add cocoa powder to it. Whisk to get a lump free chocolate batter. That’s it, our marvelous looking soft and spongy Vanilla Chocolate Marble Cake is ready. Slice it & enjoy every bite of this soft spongy delicious cake just on its own or with a cup of tea/coffee or with fruits and cream. Happy Baking!!Shweta