Image for Mary decorates her Christmas cake

Mary decorates her Christmas cake

Duration: 01:29

Mary shows Paul how she makes royal icing; egg whites beaten to a froth, with icing sugar added and a little glycerin and lemon juice. She ices the cake and decorates it with a ribbon and some Christmas angels.

Available since: Wed 12 Dec 2012

This clip is from

The Great British Bake Off Christmas Masterclass

Great British Bake Off judges Mary Berry and Paul Hollywood make some festive favourites.

First broadcast: 18 Dec 2012

Image for Christmas Masterclass Not currently available on BBC iPlayer

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