Add dry ingredients together,,....instead cocoa powder

Beat butter till fluffy...add condensed milk and again beat till fluffy.

Mix dry mixture in butter mix and fold..add vanilla..vinegar and hot milk...till dropping consistancy, divide batter in 2 part....mix cocoa powder in 1 part and mix.

Grease a cake tin pour both batter randomly,and make designe with knife.. pre heat oven 180 degree....bake till toothpick comes out clean