Whisk together flour, salt, baking soda, cream of tartar, and baking powder. Cut lard into flour mixture using a pastry blender until crumbly; stir in buttermilk. Turn mixture onto a floured surface and knead just a few times to form a moist dough.
Roll dough out 1-inch thick; cut biscuits with a cookie cutter or round glass. Place biscuits on an ungreased baking sheet.
Bake in the preheated oven until tops are golden, about 12 minutes.