01 -
Preheat oven thoroughly to 425°F and position rack in center for even baking.
02 -
Whisk together flour, sugar, salt and baking soda in large mixing bowl until completely combined.
03 -
Work softened butter into flour mixture with fingers until it resembles coarse meal texture.
04 -
Add currants or raisins to flour-butter mixture, distributing evenly throughout.
05 -
Create well in center of dry ingredients for adding wet ingredients.
06 -
Pour beaten egg and buttermilk into well and stir with wooden spoon until too stiff to mix.
07 -
Use floured hands to gently gather mixture into rough ball, being careful not to overwork.
08 -
Add additional flour if needed until dough is sticky but manageable.
09 -
Transfer dough to lightly floured surface and shape into round loaf without overworking.
10 -
Place shaped loaf in greased cast iron skillet or on baking sheet.
11 -
Score top deeply with X pattern using serrated knife to allow heat penetration.
12 -
Bake 35-45 minutes until golden brown and hollow sounding when tapped.
13 -
Tent with foil if top browns too quickly while baking.
14 -
Test doneness by inserting skewer into center - should come out clean.
15 -
Cool in pan 5-10 minutes before transferring to rack for serving.