Rinse the apricots. Put them into the casserole, cover with water and simmer until they are ready (the apricots should soften).
Rub the cooked apricots through the sieve and combine them with sugar and citric acid.
Whip the egg white in stiff foam and carefully combine with rubbed apricots. Put the batter into the baking pan, brushed with butter and sprinkled with breadcrumbs.
Bake the pennik for 30 mins in oven preheated to 180C. The finished pennik could be dusted with powdered sugar.