Bring the water, sugar and cinnamon to the boil, allow the syrup to cool slightly.
Mix the apple and pear with the lemon juice, toss in the syrup, allow the excess to drip off, place on two baking trays lined with baking paper.
Approx. 2 hrs. in the centre of an oven preheated to 100°C, turning twice. Remove from the oven, transfer to a cooling rack with the baking paper and leave to cool.