Place the pears into a large pot, then add your sugar, saffron, orange blossom water, and vanilla. Then pour your water over the pears, and cook on a medium heat for 1 to 2 hours. You want to cook the pears just long enough so they are soft but not mushy. If you'd like the syrup to be thicker, cook everything but the pears first for about 45 minutes, then add your pears.

Enjoy with some vanilla ice cream.