Finished off the cake yesterday, and it looks as though it is a success. It was all pretty straight-forward really.
First (#18) Marzipan; sieve 8 ounces of icing sugar into a large bowl containing a pound of ground almonds. In a small bowl, beat an egg with 3 or 4 tablespoons of lemon juice. Use a wooden spoon or the beater attachment on a food mixer to form a paste. Use a knife to cut off the top of the Christmas Cake so that it is nice and flat on top. Knead the marzipan a little while and then roll two thirds out using icing sugar instead of flour to form a top circle, gluing it in place with some warmed apricot jam. The Grigson gave a handy hint at this point – roll everything out on a bit of greaseproof paper to prevent it sticking and falling to bits. She is a star! Now roll out an oblong of marzipan to wrap around the cake, again sticking it with apricot jam.
FYI: Marzipan originated in Persia (now Iran/Iraq), but its name originates from the German for 'March bread'.
(#19) Royal Icing was quite exciting to do; whip two egg whites until foamy but not stiff. Stir in two teaspoons of lemon juice and then, bit by bit, sieved icing sugar until a glossy spreadable icing is formed. Spread it over the marzipan using a palette knife, dipping the knife in water to prevent the icing from sticking. I have no piping bags - nor have I ever used one - so I did a lovely festive snow effect by gently whacking it with a palette knife! It looks very impressive even if I do say so myself. I forgot to buy decorations though! Poo!