Preheat oven to 425 degrees Fahrenheit.
Add flour, salt, baking powder and sugar in a bowl. Mix together with a fork.
Slowly add 1/2 cup of heavy cream, mixing together with a fork. If the dough has come together then you do not need to add anymore cream. If it is not holding together add up to 1/4 cup more cream.
On a floured surface, knead together the dough for about a minute being careful not to over-knead.
Pat the dough into a large square about 1/2 inch thick. Cut into 6 squares.
Place on a parchment lined baking sheet.
Bake for 15-18 minutes, until the biscuits are lightly browned