01 -
Whisk together flour, baking powder, baking soda, and salt in a large bowl until evenly mixed without lumps.
02 -
Add cold cubed butter and cut in using a pastry cutter or fingertips until mixture resembles coarse crumbs with visible butter pieces.
03 -
Pour cold buttermilk into the dry mixture and gently stir with a fork until the dough just comes together, avoiding overmixing.
04 -
Turn dough onto a floured surface, gently pat and fold over itself 3 to 4 times to build layers, then roll to about one inch thick.
05 -
Press a sharp biscuit cutter straight down into the dough without twisting; place biscuits close on a baking sheet and bake at 220°C (425°F) for 12 to 15 minutes until risen and golden.
06 -
Shape sausage into patties slightly wider than biscuits and cook in a skillet over medium heat for 3 to 4 minutes per side until browned and cooked through; drain excess grease.
07 -
Split warm biscuits, layer each with a sausage patty and optional cheese slice, then top with the biscuit halves; serve immediately while hot.