Dessert

Combine self-raising flour and salt with suet, currants, caster sugar, lemon zest and orange zest in a bowl
Pour in 150ml milk and mix to a firm but moist dough, adding extra milk if necessary
Shape the dough into a fat 20cm roll, place on baking parchment, wrap loosely and tie the ends with string
Steam the wrapped pudding over boiling water for 1.5 hours, topping up the pan with water as needed
Remove from the steamer, cool slightly and unwrap
Slice and serve with custard