1Heat oven to 375°F. In large bowl, beat sugar, sour cream, butter, shortening, molasses and egg with electric mixer on medium speed, or mix with spoon. Stir in flour, baking soda, cinnamon, ginger and salt.
2Onto ungreased cookie sheets, drop dough by rounded tablespoonfuls about 2 inches apart.
3Bake 9 to 11 minutes or until almost no indentation remains when touched in center. Cool 1 to 2 minutes; remove from cookie sheets to cooling racks. Sprinkle with additional sugar while warm.