Preheat the oven to 180C/350F/gas mark 4
Use a 900g/2 lb loaf tin.
Grease the loaf tin. Line the base and sides with greaseproof paper. Grease the paper well. Combine the sour cream, bicarb. cinnamon and carrots until well blended. Add the butter and sugar. Mix well. Stir in the sifted flour and sultanas. Pour into the prepared tin. Bake for about 50 minutes. Stand for five minutes before turning on to wire rack to cool.
