Create a delectable cornucopia of fruits and vegetables to top your cake using marzipan, an almond paste available in tubes and jars. It moulds into different shapes, takes food colouring well and can be painted with details. Marzipan keeps several weeks in an airtight container. Make the fruits and vegetables for your cake ahead of time, so you aren't rushed.
Remove a 2.5 cm (1 inch) ball of marzipan to make an apple. Add a drop of red food colouring to the marzipan. Knead the colour into the marzipan until it's evenly distributed. Roll the marzipan between your hands until it is spherical.
Pinch the bottom of the sphere slightly with your fingers so it is smaller than the top. The bottom of an apple is slightly squared off and smaller than the top.
Push the wood skewer 6 mm (1/4 inch) into the top centre of the sphere to make a hole. Use your fingers to shape the top of the sphere so it slopes downward toward the hole you make with the skewer. Place a clove, bud side down into the hole for the stem of the apple.
Paint the blush on the apple by dabbing on red or yellow food colour.
Remove approximately 2.5 cm (1 inch) of marzipan. Colour it a deep green or mellow yellow. Roll into a cylinder shape that's about 5 cm (2 inches) long and 1.2 cm (1/2 inch) thick. Use your fingers to make the cylinder slightly thicker at one end and narrower at the other end. Shape the end of the thicker end so it's round. Shape the narrow end so it is flat.
Take a 6 mm (1/4 inch) ball of marzipan and shape it into a square. Round the square slightly. This is the stem of the courgette. Stick it to the narrow end of the courgette.
Bend the courgette slightly so it curves. Dap on brown food colouring -- mix red, blue and yellow together -- on the wider blossom end. Streak the stem with a little brown food colouring to add definition.
Tint three 5 cm (2 inch) balls of marzipan; tint one light purple, one dark purple and one light green by adding drops of blue and red food colouring for purple and green food colouring for the light green.
Pinch off pieces that are no more than 6 mm (1/4 inch) thick once the marzipan has been coloured. Roll into balls. You'll need about 20 balls to make a cluster of grapes.
Assemble the grape cluster of all the same colour grapes. Start with one "grape" at the bottom of the cluster. Add three more grapes above it, five more above the three and so forth until the clusters are full.
Stick a whole clove into the top of the grape cluster as the stem. The bud of the clove goes into the cluster so only the stem is visible.
Tint the marzipan a bright orange using yellow and red food colouring. Tint a small bit of marzipan green for the leaves.
Roll the orange marzipan out into a cylinder shape that's 5 cm (2 inches) long and 1.2 cm (1/2 inch) thick. Stretch out the bottom of the cylinder into a more pointed end and flatten the top of the cylinder so it's thicker. It should now be carrot shaped.
Roll the green marzipan out flat with your fingers by patting it down. Cut thin strips about 2.5 cm (1 inch) long and 3 mm (1/8 inch) wide. Attach the thin strips to the top of the carrot as its leaves.
Make additional fruits and vegetables by tinting the marzipan the appropriate colour and shaping as you would soft clay. Use real fruits and vegetables as your model.
Wash hands thoroughly before touching the marzipan since it meant to be eaten.