Grate butter. Place in freezer for at least 15 minutes.
Mix dry ingredients, mix through jalapemos and most of the cheese. Stir through butter. Add buttermilk in 2 batches, just stirring together.
Don't knead. Bring together. Roll into a rectangle, cut in half, stack. Repeat 3 or 4 times. More stacks, more layers. Or just roll and fold each layer. End with a rectangle 1.5 - 2 inches thick.
Cut into desired shapes. Best to use pastry scraper and cut in straight sided shapes. Will make about 8 big biscuits.
Egg wash and sprinkle with reserved cheese.
Bake at 375F for 35 mins.
