In a mixing bowl, beat egg yolks well.
Gradually add in sugar and heavy cream together with egg yolks, and beat in.
Add cardamom and flour; mix well to combine.
Form dough into a ball and place on a lightly floured surface. Roll the fattigmann cookie dough very thin.
Cut the dough into strips using a pizza or pastry cutter 1 1/2 inches wide x 4 inches long.
Make a gash lengthwise in the center of each strip and slip one end through the gash, to twist the middle of the cookie. Repeat for all the strips.
Place 3 c. of oil in a pan on medium heat, until oil is hot. Place the cookie strips in the hot oil and fry until lightly brown. Flip to the other side and brown. (This should only take a 1 1/2 - 2 minutes).
Remove cookies from the oil onto a paper towel and let them cool.
Optional: Sprinkle with powdered sugar before storing or eating. Enjoy!