In a medium bowl, whisk together flour, salt, baking soda, cinnamon, ginger, nutmeg and cloves. In a large bowl, beat softened butter with both sugar and molasses until fluffy.
Add in egg and vanilla extract, beat until smooth. Add the flour mixture in three separate additions, beating after each until fully incorporated. Cover and refrigerate for at least one hour.
Preheat oven to 350 F. Place powdered sugar in a shallow bowl. Roll cookie dough into balls and roll into the powdered sugar. Place onto ungreased baking sheets 2-inches apart. Bake for 10-12 minutes.