Using an apple corer, core the pears. Using a sharp knife, peel the pears and cut them in half.
Place the pear halves in a large saucepan.
Add the orange juice, allspice, raisins and sugar to the pan and heat gently, stirring, until the sugar has dissolved. Bring the mixture to the boil for 1 minute.
Reduce the heat to low and leave to simmer for about 10 minutes, or until the pears are cooked, but still fairly firm- test them by inserting the tip of a sharp knife.
Remove the pears from the pan with a slotted spoon and transfer to serving plates. Decorate and serve hot with the syrup.
Use cinnamon instead of the allspice and decorate with cinnamon sticks and fresh mint sprigs, if you prefer.