Preheat oven to 200°C.
Mix the butter, sour cream and egg well.
Sift the flour, cayenne pepper and salt together.
Mix the cheese and chives into the flour and add butter mixture.
Mix to a soft dough.
Turn dough out on a lightly floured surface and knead lightly.
Pat out with palm of hand until about 3 - 4 cm thick.
Shape into a round and mark 6 wedges using a sharp serrated knife.
Do not cut all the way through.
Place on a lightly greased oven tray.
Brush lightly with beaten egg.
Bake for 20 - 25 minutes until golden brown.
Cut into wedges and serve hot with butter and grated cheese