Soak the raisins in water mixed with the rum extract. The liquid barely covers the raisins. (skip it if you do not like raisins.)
Separate the egg whites from the yolks, put them into 2 bowls.
Beat the egg whites with an electric handmixer or whisk until stiff peaks form.
Mix the egg yolks with 2 tablespoons of powdered sugar, 2/3 cup of flour, 2/3 cup of milk, 1 teaspoon of vanilla extract and a pinch of salt. First add only the half ofthe milk, stir until no lumps, and then add the rest of the milk. Gently fold in the beaten egg white, make sure you do not break it and it stays aery.
Heat 1 tablespoon of butter in a non-stick pan. When the butter is hot, pour in the half of the batter. Sprinkle over the soaked raisins.
Cover with a lid and fry it over medium heat.
Using a spatula gently go underneath after 2 minutes and check the color of the pancake. It is time to flip using the spatula when it is golden brown. Fry this side too until golden brown.
Cut up into bigger chunks using your spatula.
Sprinkle with powdered and serve it with your favorite jam.