Step 1: Line a cake tin 20x 2cm with deep sides with baking paper.

Step 2: Put the chocolate, butter and syrup into a heatproof bowl. Stand the bowl over a pan of just simmering water and leave to melt, stirring occasionally until melted and smooth.

Step 3: Meanwhile roughly chop the pears and crush the gingernuts into very coarse crumbs- need to keep some chunky bits for the texture.

Step 4: Combine the pears, glace ginger and crushed biscuits into a bowl.

Step 5: Pour the melted chocolate mixture over the combined biscuits and pear. Mix well.

Step 6: Pour the mix into the prepared pan smoothing over the top. Leave to cool, then transfer to the refrigerator for several hours to allow it to set completely.

Step 7: To serve remove the slice from the tin and with a hot knife cut into slices or pieces.