Mix together one egg, three egg yolks, sugar, cream and salt. Gradually stir in flour until dough becomes stiff enough to roll.
Roll very thin but cut into small circles (2-3 inches diameter). Cut small slits (about 1/4 to 1/2 inch) at 12:00, 3:00, 6:00, and 9:00 positions. Paste three circles together in center using egg white.
Fry cookies in hot oil - sides will curl up like a rose. After draining on paper towels, place a small amount of red jelly in the center of each rose and sprinkle with confectioners' sugar.
We have determined the nutritional value of oil for frying based on a retention value of 10% after cooking. The exact amount may vary depending on cook time and temperature, ingredient density, and the specific type of oil used.