Melt the fat. Mix flour, fat, sugar, eggs, rum and salt with the dough hooks of the hand mixer to a smooth dough. Cover and chill for about 30 minutes. Roll out the dough on a floured work surface to a rectangle (approx. 45x35 cm).
Use a cake wheel to cut out 8 cm long and 5 cm wide rhombs. Heat the fat in a high pot to 180 °C. Fry the rhombs in it in portions for about 3 minutes until golden brown. Drain on kitchen paper.
Dust with icing sugar. Results in about 65 pieces.