Boil potatoes, drain, mash
Add in aquafaba, flour, salt, sugar, knead
Roll flat, slice into portions
Place halve plums on each, top with sugar and cinnamon powder
Shape into balls
Bring water to boil, drop dumplings and cook til floating, drain
Heat margarine til melted, stir bread crumbs, cook til browning
Roll dumplings on bread crumbs
Serve with icing sugar