Step 1 In a food processor, combine the flour, baking powder, sugar, baking soda, salt and pepper and pulse several times to combine. Add the frozen butter and lard and pulse several times again, just until the mixture resembles a coarse meal.
Step 2 Turn out the flour mixture into a stainless steel bowl, add the buttermilk and stir with a dinner fork until combined. Dust your hands generously with flour, gather the dough while it’s still in the bowl, and work it with your hands until it barely holds together.
Step 3Turn the dough out onto a floured surface and knead, folding and turning the dough, until it becomes slightly smooth and homogeneous, about 4 or 5 turns of the dough. Wrap and refrigerate the dough until ready to add to the cobbler.