Marzipanning a Fruit cake for Royal icing

The amount of marzipan you will need to cover a cake will vary depending upon how thick you like your marzipan to be. But to get you started, here is a rough guide for square and round cakes.

Round Cake 15cm
(6 in)
18cm
(7 in)
20cm
(8 in)
23cm
(9 in)
25cm
(10 in)
28cm
(11 in)
30cm
(12 in)
Square Cake 15cm
(6 in)
18cm
(7 in)
20cm
(8 in)
23cm
(9 in)
25cm
(10 in)
28cm
(11 in)
30cm
(12 in)
Marzipan 500g
(1lb 2oz)
650g
(1lb 6oz)
800g
(1lb 12oz)
900g
(2lb)
1.1Kg
(2lb 8oz)
1.4Kg
(3lb)
1.6Kg
(3lb 8oz)
1.8Kg
(4lb)
If you plan to cover your cake in flat royal icing your cake the marzipan will need to have flat surfaces and sharp defined corners and edges. To achieve this you will need to marzipan your cake in sections.

The All in One Method

Tutorial

This is the easiest way to cover a cake with marzipan. As it produces a finish with rounded edges and corners, it is best used for cakes that are to be covered with sugarpaste or swirly royal icing. If you want to create a sharp edged finish, you will need to cover the cake in two parts – top first and then the sides.

Step-by-Step Guide

Step 1

Cut away any burnt or hardened bits of crust and slice a little cake off the top to make it level. Then turn the cake upside down on its board. Plug any holes with little bits of marzipan and if there’s a gap between the board and the edge of the cake fill it by poking a string of marzipan into the gap.

Step 1

Step 2

rim away any excess marzipan from around the base. If you want to add a little alcohol to your cake, pierce the top of the cake a few times with a cocktail stick and drizzle a little brandy over the top. Place some apricot jam into a heatproof bowl and either heat to boiling in the microwave or over a pan of simmering water. Paint the jam over the outside of the cake using a pastry brush.

Step 2

Step 3

Dust your work surface with a little icing sugar and knead the marzipan until pliable. Roll it out to a thickness of no less than 5mm (1/4 in) then lift and place over the cake. Starting with the top and ideally using a cake smoother, smooth the marzipan over the top of the cake and down the sides. Trim away the excess from around the base of the cake.

Step 3

Step 4

To then cover your cake with sugarpaste, lightly brush the marzipan with some cooled boiled water. Knead and roll out the sugarpaste and cover the cake in the same way that you did with the marzipan.

Round Cake

Before you start, measure the height and circumference of your cake and make a note of the measurements.

Step-by-Step Guide

Step 1

Level the top of the cake if necessary and spread boiled apricot jam over the top of the cake. Knead and roll out enough marzipan to create a disc just larger than the top of the cake and no thinner than 5mm (1/4 in). Place the cake UPSIDE DOWN onto the marzipan. Holding a sharp knife almost vertical, cut away the excess. and keep it to re use it for the sides.

Step 1

Step 2

Now turn the cake the cake the right way up and stand it on a cake board. Paint jam around the sides and knead and roll out the remaining marzipan. Cut out a long strip as wide as the height of the cake and as long as the circumference. Roll the strip up a like a bandage and unwind it around the cake.

Step 2

Step 3

Carefully run over the cake with a cake smoother. The cake must be as smooth as possible as any bumps will show through the royal icing. Leave to dry for a minimum of 48 hours before royal icing the cake.

Step 3

Square Cake

Step-by-Step Guide

Step 1

Level the top of the cake and brush the top with boiled apricot jam. Roll out some marzipan and place the cake upside down on top (the same as for the round cake) Cut around the edges and lift and place the cake onto a cake board.

Measure the length and width of the cake and spread jam around the sides. Cut out four marzipan strips using these measurements and stick the strips around the sides. Smooth the sides and top. They must be as neat and crisp as possible and leave the cake for at least 48 hours before royal icing it so the marzipan has time to dry out and harden.
Step 1

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