Tapioca plum-cake with orange and vanilla aroma

In this experimental cooking that I'm inventing, each well done test is a over-the-top success.
Better if the test is a double test!
It was a long time that I wanted to try making a yeast-free plum-cake and using tapioca flour in a cake...
I was finishing cookie for breakfast, so I went on Internet and I visited the other blogs all around the world and I changed a normal recipe in alternative, mine.
But I wasn't alone in this try.
My husband during football match on TV(I'm cruel, I know it) helped me thanks to his experience with sponge-cakes.
He really shines and his mother and I are a little bit envious is yeast-free sponge-cake.
The trick is that he beats the eggs very very long.
So I thought that it could be ok making in the same way a plumcake?
It works (thanks goodness!)
Ingredients:
150 g superfine corn flour (fumetto type in Italy)
50 g tapioca flour
3 eggs
70 ml corn oil
250 g whole  natural unsweetened yogurt
100 g fruit sugar
vanilla aroma
orange aroma
a pinch of salt

Preparation:
He whip with electric whisk the eggs for about 30 minutes (more increase the volume, better it is) with fruit sugar and a pinch of salt.
I drizzle the yogurt and the oil, then I add some vanilla and orange aroma and last the flours, a tablespoon at time.
I pour the mix in a mould and other mini moulds for plum-cake previously oiled with margarine and sprinkled of corn flour.
I bake in pre-heated oven at 180° for 40-45 minutes in middle position.
I put as Lorraine Pascale suggests some ice in the bottom baking sheet in order to create a wet environment.
We look growing and blowing up  without EVER opening the over.
We start open it just a split only ten minutes after we switch off, then after other ten minutes we take them out and we cover with a dishcloth resting for a lot of time (better a night, so it is easy and safe taking them out from the moulds).

First time we did it , we tasted  surprised of such wonderful taste and satisfied as it was the result of a scientific experiment that will save the world.
They made me happy and they still make!