Mentega dan Keju: Step-by-Step on How to Bake Your Own Rainbow Cake (English)

My version of Rainbow Cake: Planta Cake with Buttercream Cheese and Yogurt icing.

I love the tartness of the icing and the sweet taste of Planta cake together.

As promised, I will show you how to prepare this cake step-by-step.

For the cake, you may choose the cake recipe from my list which are the Butter Pound Cake (if you want to make Planta Cake, substitute the butter with Planta margerine), the Soured Cream Madeira Cake, or the Yogurt Sponge Cake. If preparing for kid's birthday party, it is best to use the Butter Pound Cake. For the icing, you may use Buttercream, Buttercream Cheese, Buttercream Yogurt, Lemon, Strawberry or Chocolate icing for Dark Rainbow Cake.
Next, you need to divide batter evenly between six medium bowls. I use a ladle to scoop the batter into each bowls. 1 spoonful of ladle is enough for 1 type of color.
Then add enough of each color of food coloring to each bowl, about 10 drips of gel food color. (be sure not to put too much coloring, or your batter will become bitter!
Whisk your batteruntil desired shade is reached. Transfer each color to an individual cake pan. Transfer to oven and bake until a cake tester inserted into the center of each cake comes out clean, about 15 - 10 minutes (after 10 minutes, check your cake, oven temperature varies, some may be hotter then other, you don't want to risk your cake being burned, bake in batches if you have small oven, I usually bake in 3 batches).
Remove cakes from oven, let it cool in the tin. After 10 mins, you may transfer to a wire rack; and let the cake to further cool completely. (Since I usually bake late at night I usually let it cool overnight and only ice my cake the next day.)

Then, using a serrated knife, trim tops of cakes to make level. Place newspaper under your Lazy Susan, so you don't make messes, put a cake liner or those aluminum cake foil on top of the Lazy Susan, for you to place your cake.
Spread a bit of icing on the cake liner before you put your first cake layer, so your cake won't move, Then, place the purple layer first. Spread a scant 1 cup icing over the first layer with a spatula so it extends just beyond edges. Repeat process with blue, green, yellow and orange layers.
Lastly, place the red layer on top, bottom-side up. Gently sweep away any loose crumbs with a pastry brush.

Using an offset spatula, cover the top and sides with a thin layer of frosting (also use any of the excess frosting visible between the layers, this process is called crumb coating (Learn from Sandy Shepherd how to crumb coat a cake), so that your cake crumbs don't spread on your icing and spoil your beautiful frosting). Refrigerate until set, about 30 minutes.
Using an offset spatula, cover cake again with remaining frosting.