Pre-heat oven to 400F. Mix flour, salt, sugar, and baking powder in a medium-sized bowl; add butter (cold), and using a pastry blender or a fork, cut your butter into your flour until you get pea-size balls.
Stir in buttermilk until you get a rough-shaggy dough, place it onto a work surface and lightly knead it until it comes together.
Roll your dough into a rough rectangle, fold it into thirds that overlap, then roll it out one more time until you get a rectangle that is roughly ¾ of an inch.
Using a 4” biscuit cutter, cut out as many pieces as you can and place them on a baking sheet with greased parchment paper.
Lightly brush the top of your biscuits with extra buttermilk and place them in the oven for 12 to 14 minutes or until golden brown.
