Cinnamon buns

250ml of milk

150g of unsalted butter, softened

1 egg, lightly beaten

8g of fast-action dried yeast

1 medium free-range egg

122g of soft light brown sugar

1/2 tsp salt

450g of strong white flour, plus extra for dusting

80g of soft dark brown sugar

1 tsp ground cardamom

2 tsp ground cinnamon