Cake:

1. Mix the milk and vinegar until it slightly curdles (buttermilk)
2. Beat butter and sugar until it turns creamy white
3. Add eggs one at a time until well mixed
4. Add all-purpose flour and baking powder
5. Then add buttermilk (milk and vinegar mixture) and vanilla essence
6. Divide the dough into 3, mix 1 of the dough with cocoa powder and chocolate paste and then put it in the cake tin
7. Mix 1 part of the dough with strawberry paste, then put it in the cake tin
8. Finally, add the vanilla butter dough to the cake tin
9. Bake at 170°C for 30 minutes, or until done
10. Take the cake out of the oven and let it cool

Cream:

1. Beat all ingredients until fluffy
2. Divide into 3, set aside 1 part of cream cheese
3. Mix 1 part with chocolate paste
4. Mix the other 1 part with the strawberry paste

Finishing Cake

1. Take chocolate butter cake, then paping with 3 colors cheese cream
2. Repeat the steps until finished
3. Cover the outside with the 3 color cheese cream
4. Decorate the cake according to your taste