Preheat the oven to 180 degree centigrade for 10 minutes.
In a mixing bowl add sugar and butter beat till fluffy,add eggs and continue to beat for 3 min add milk and pineapple extract beat until well combined.
In a separate bowl stiff together the flour and baking powder and salt mix well. Then slowly add this flour mixture in to wet mixture, mix well. Separate the mixture in to 3 equal portion in different bowls Then add the colours, in one bowl green and other orange mix well and keep aside.
Prepare 3 round baking pans with baking paper and apply some butter. Pour the each mixture in to individual pans making sure to smooth out of the top. Bake in preheated oven for 25 to 30 minutes I baked 2 cakes at a time and other one in next batch.
Bake test ,insert a toothpick in the center of the cake if it comes out clean then it is done. Remove from the oven and let it cool for 5min before inverting onto to a cooling rack. Remove baking paper let it cool completely.
Mean while prepare for butter cream frosting, in a mixing bowl add butter and sugar powder beat well till fluffy.
Assembling: Start with green layer of the cake and spread with the frosting along with the fresh fruit puree, till it reaches the edges, then top with white layered cake and spread frosting and finely orange colour layer spread frosting cream completely and keep it in a refrigerator for half an hour.
Mean while prepare for icing 1 cup whipping cream and 2 tbsp powdered sugar and whip well. Make 3 different portions and add colours. Add the cream in to piping and cover the cake with white icing, make orange flowers and green leaves.
Some few Steps
Making of leaves
Make a design of your own choice
Take out in a card
Make a proper icing border with same green colour
Patriotic Frosting Cake is ready