Preheat oven

Remove the cherry kernels and put the cherries in a strainer.

using an electric mixer mix the egg whites with a dash of salt and gradually add the sugar

When the sugar is melted add the egg yolks. Keep mixing. Add the flour (in which you added the baking powder), the milk and the melted butter while mixing. Add the vanilla and the rum.

Use oil and baking paper to cover the tray.

Add the mixed composition to the tray and put it in the oven for 10 minutes (high). Then extract the tray from the oven and add the cherries all over the cake. Put the tray in the oven for another 10 minutes on high and then reduce 20-30 minutes on low heat. Check the cake with a toothpick to see if it's ready ;). When it's colder add some powder sugar on top.

you can use any fruits you like instead of sour cherries. I like the sour cherries because of the mix of taste, a little sour from the cherries and sweet from the cake ;))).