Combine flour, 1 teaspoon cardamom, baking soda, and salt in a small bowl. Beat together 3/4 cup butter and brown sugar until fluffy. Beat in heavy cream. Then slowly add flour while beating.
Spoon dough onto a large sheet of waxed paper. Using the waxed paper to help you roll this soft dough into a 10 inch long round roll. If dough is too soft to work with refrigerate for an hour and then smooth out the roll. The rounder you can make this roll the prettier your cookie will be. Wrap securely and then refrigerate for 4 hours to get it very cold and firm.