Wash and dry the pears.
Place them, standing up, in an oven-proof heavy-bottomed pot/casserole dish.
Add all the other ingredients.
Simmer uncovered on a medium heat for 35 minutes.
While the pears are simmering, heat the oven to 180ºC (350ºF).
Place the uncovered pot in the oven and leave to bake for 30 - 40 minutes, until the pears look soft and slightly shriveled.
Using a slotted spoon, remove the pears from the liquid and set aside.
Pour the wine mixture through a fine sieve, then boil the liquid until it becomes syrupy in consistency. the volume will decrease by about half and will become thicker.
Pour the wine syrup over the pears.
The pears can be made a day in advance. They can be eaten warm or at room temperature. They go wonderfully with a scoop of vanilla ice-cream.