In a medium bowl, whisk together 1/2 cup sugar and the egg yolks until well blended and it just starts to lighten in color. Add the cream a little at a time, stirring continually. Pour the liquid into 6 (7 to 8-ounce) ramekins. Place the ramekins into a large cake pan or roasting pan. Pour enough hot water into the pan to come halfway up the sides of the ramekins. Bake just until the creme brulee is set, but still trembling in the center, approximately 40 to 45 minutes. Remove the ramekins from the roasting pan and refrigerate for at least 2 hours and up to 3 days.