Ingredients.
To make the pancakes. Preheat the oven to hot. Separate the eggs, then mix the yolks with the flour, milk and caster sugar. Make sure it is well mixed. Whisk the egg whites until stiff adding the pinch of salt half way through. Fold the beaten whites into the yolk mixture carefully to avoid losing too much air. Drain the raisins and pour the rum from them into the plums, which should have nearly finished stewing or reheating if you did them earlier.
Melt a generous knob of butter in a large frying pan and pour enough of the mixture in to give you a pancake about 1/2 inch thick. Sprinkle in some of the raisins. Cook over medium heat until the under side is golden brown and the turn the pancake over, not an easy task. Cook for no more than a minute on the second side then break up the pancake with a fork or some suitable tool. Now transfer the pan to the oven for a couple of minutes to finish the cooking. Be careful not to overcook the kaiser pancake.
When done transfer to a plate and dust with icing sugar.
Serve straight away with the stewed plums.