Best flavor, most tender and fun to decorate!
Adapted from Cook's Tour, Junior League cookbook of Shreveport, Louisiana.
Measure the flour. Sift the flour, baking soda and cream of tartar four times; set aside.
Cream the butter, shortening, sugar, milk, egg, vanilla, lemon juice, lemon zest and salt.
Slowly add the dry ingredients to the creamed ingredients.
Shape into a disk, wrap in wax paper and chill. Best chilled overnight.
Preheat oven to 350F®
Roll out on a lightly floured silicone baking mat. Cut into shapes. Remove the cookie dough between cookies.
Bake for 10 - 12 minutes, until lightly brown.
Cool on wire racks.
Decorate with icing:
1. Outline each cookie with the thicker Royal icing.
2. Fill in with the thinner icing.
3. With a chop stick, smooth out the icing to fill in all surfaces of the cookie.
4. Set aside to dry overnight.