Separate eggs. Refrigerate the egg whites. Whisk egg yolk and 2 tablespoons of sugar. Add milk, flour and salt and mix everything to a smooth dough. Let it swell for about 30 minutes. In the meantime wash, halve and stone the plums.
Stir the groats powder, 5 tablespoons of sugar and 3 tablespoons of prune juice until smooth. Boil up the rest of the juice. Stir in the groats powder. Add plums, bring to the boil and simmer for 2 minutes. Let the compote cool down. Wash the raisins and dab dry. Beat egg whites until stiff and fold into the dough. Heat oil in a large pan. Add half of the dough, sprinkle evenly with raisins, bake until golden yellow and turn. Then tear into pieces with 2 forks and finish baking. Bake the rest of the dough in the same way.
Wash the raisins and dab dry. Beat egg whites until stiff and fold into the dough. Heat oil in a large pan. Add half of the dough, sprinkle evenly with raisins, bake until golden yellow and turn. Then tear into pieces with 2 forks and finish baking. Bake the rest of the dough in the same way. Serve the stew and compote. Dust with icing sugar and sprinkle with pistachios