Preheat the oven to 425 degrees F (220 degrees C). Set an ungreased baking sheet in the oven while it's preheating.
Whisk together the flour, baking powder, baking soda, and salt in a large mixing bowl. Using a pastry blender, cut the butter into the flour mixture until the pieces of butter are about the size of peas. You can also grate frozen butter into the dry mixture using a box grater.
Stir in the ¾ cup of buttermilk until the dry ingredients are just combined and the dough is shaggy and dry-looking.
Transfer your biscuit dough onto a clean work surface, flatten and fold the dough with your hands into a rectangle. It's alright if the dough seems like it's too dry, as you work the dough the buttermilk will moisten the dry flour mixture.
Fold the dough by thirds onto itself, then flatten into a rectangle again using your hands. Repeat this at least 3 more times, flattening the dough into a ½-inch thick rectangle, and folding by thirds to build the flaky layers in your biscuits.
Optional step: wrap the folded dough with plastic wrap and set in the fridge or freezer to chill for 5 to 10 minutes. This will ensure you have cold butter that'll keep your dough laminated and flaky, like when making croissants.
Unwrap the biscuit dough if you chilled it, and flatten the dough to 1 inch thick. Dip a 2-inch diameter biscuit cutter into a little excess flour and cut biscuits using an up and down motion. Never twist, that will seal up the edges.
Brush the 1 tablespoon of buttermilk onto the tops of the biscuits, so they'll be golden brown when ready.
Place the biscuits onto the hot prepared baking sheet quickly in the oven and bake for 13-15 minutes or until the tops are golden.
Remove from the oven to cool and brush the melted butter on top of each biscuit. Serve with honey butter, jam, gravy, chicken, etc.