For the scones:
3 cups all-purpose flour
1 tbsp. baking powder
1 tsp. salt
1-2 tsp. ground black pepper (depending on your preference)
8 tbsp. cold unsalted butter, cut into small cubes
1½ cups grated cheddar cheese
4 green onions, thinly slices
10 slices bacon, cooked and chopped or crumbled into small pieces
1 cup buttermilk (plus up to ½ cup extra, if needed)

For the egg wash:
1 large egg
2 tbsp. water