Sieve the flour, salt and spices into a large mixing basin. Add the suet, breadcrumbs, grated lemon rind, brown sugar, blanched and chopped almonds, raisins, currants, sultanas and chopped mixed peel. Remove the stones from the soaked but uncooked prunes, chop finely and add to the mixture. Mix thoroughly and make a well in the centre.
Warm the treacle a little to make it thin and runny