1. Cream butter; add both sugars. Add oil, eggs, vanilla.
2. Sift together flour, salt, soda, baking powder. Add to creamed mixture, along with tartar and nutmeg. Mix well.
3. Form walnut size balls and place on ungreased cookie sheets.
4. Grease bottom of small glass, dip into sugar and press balls down on cookie sheet.
5. Bake at 350 degrees for 12 minutes.