In a bowl, combine sugar and cinnamon powder. Mix well and set aside.
In another mixing bowl, combine cake flour, salt, baking soda, and cream of tartar. Mix well then set aside.
Then put butter, vegetable shortening and sugar in a cake mixer. Put-in the egg. Mix for 30 minutes.
After 30 minutes, gradually pour the mixed flour in the cake mixer. Mix well for 10 minutes. Set aside.
Roll balls of dough in cinnamon and sugar mixture. Place 2 inches apart on ungreased baking sheets.
Bake 8 to 10 minutes in 375 degrees Fahrenheit, or until set but not too hard. Remove immediately from baking sheets.
Eat, share and enjoy!