Sieve all-purpose flour, baking soda and baking powder together 3-4 times.
Mix together properly butter and condensed milk, till it becomes fluffy and bubbles are formed. Add vanilla essence to it and mix well.
Now pre-heat the oven at 180°C for 10 minutes.
To the butter and condensed milk mixture add the sieved ingredients in 3 parts. Along with it add the water is also in three parts. Mix everything by cut and fold method.
Divide the batter into three layers. In one of the three layers batter add cocoa powder plus drinking chocolate and mix well. In the remaining two layers add tutti frutti equally.
In a greased pan add one of the three parts below.
Now using a fine sieve sprinkle a thin layer of cocoa powder on it.
Now carefully pour the chocolate mixture over it and again sprinkle cocoa powder over the chocolate mixture.
Finally, carefully pour the last 1/3 part of the vanilla mixture.
Place the bundt pan in the preheated oven for baking at 180°C for 50 minutes or till the toothpick comes out clean when inserted in the cake.
Let the cake cool then slice them and serve.
