In small bowl, mix sugar and remaining 1/4 teaspoon ginger. Shape dough into 36 (1-inch) balls. Roll balls in sugar mixture. On ungreased cookie sheets, place balls 2 inches apart. Bake 7 to 9 minutes, or until edges begin to brown and center is set. Cool 1 to 2 minutes. Remove from cookie sheets to cooling rack. Cool completely, about 30 minutes.