Separate eggs. Beat the egg yolks with the sugar until frothy. Stir in the milk and mineral water. Add flour and baking powder. Beat the egg whites with a pinch of salt until stiff and carefully add to the batter.
Put some oil in the pan and when it is very hot, pour 1/4 of the batter into it, put 1/4 of the raspberries on top. Turn once. Continue with the rest of the batter and the rest of the raspberries.
If you take frozen raspberries, it is advisable to add some sugar to them.
Whipped cream or vanilla sauce tastes good with it.