Peel and grate the raw potatoes. Place the grated potatoes in a clean cloth or paper towel and squeeze out excess moisture.
In a large bowl, combine the flour, baking powder, salt, and black pepper.
In another bowl, whisk together the buttermilk and egg.
Add the grated potatoes to the flour mixture and stir to combine.
Pour the buttermilk mixture into the bowl and mix until a smooth batter forms.
Heat a large skillet or frying pan over medium heat and add a tablespoon of butter or oil.
Spoon portions of the batter into the skillet and flatten slightly with the back of the spoon to form pancakes about 1/2 inch (1 cm) thick.
Cook for 3-4 minutes on each side, or until golden brown and cooked through.
Remove from the skillet and keep warm while cooking the remaining boxty.
Enjoy your meal!