Preheat your oven to 450°F.
Get your baking sheets lined with parchment paper.
This will help prevent your biscuits from sticking.
In a food processor, combine the flour, baking powder, baking soda, and salt.
Pulse the mixture twice.
The goal is to mix these dry ingredients evenly.
Cut the cold butter into small pieces.
Scatter them over the dry mixture.
Pulse 4 or 5 times until the texture resembles coarse meal.
Add buttermilk to the mixture.
Pulse until incorporated.
Be careful not to over-mix to keep your biscuits tender.
Pat the dough into a rectangle, about 3/4 inch thick.
Use a round cutter to form biscuits.
Brush the tops with cream if desired, and sprinkle with black pepper.
Baking 12 to 15 minutes is ideal until they turn a beautiful golden brown.