Preheat the oven to 425 degrees F. Grease three 9-inch pie tins with 2 teaspoons lard.
Put the biscuit mix in a bowl and make a well in the middle of the flour. Put the lard in the well and add the buttermilk. Gently mix the buttermilk and lard into the flour with your hands until a soft dough forms. If the dough is dry, add a little more buttermilk; if it's too wet, add a little more flour. Coat your hands well with flour and gently form the dough into balls a little larger than a golf ball. Place the dough balls in the pie tins, 7 per tin. Gently press each ball down to flatten.
Bake until lightly browned on top and the biscuits release from the tins when you give them a shake, 30 to 35 minutes. Remove from the oven and rub the tops of the biscuits with the butter or margarine. Serve hot!
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