Pour the wine, sherry, lemon juice, sugar, and spices into a large saucepan that's deep enough to allow the pears to be submerged. Bring the mixture to a boil while stirring to dissolve the sugar, then turn the heat down to a simmer.
When the sugar is dissolved and the wine is simmering, peel the pears. The fruit will discolor quickly, so peel them only when you're ready!
Gently submerge the peeled pears in the wine mix, and poach for 20-25 minutes or until tender enough to be poked through with a fork. Turn the pears every 5 minutes to help them poach evenly.
Keeping the pears upright, remove the saucepan from the heat and allow the pears to cool in the wine. Once they're cool, remove the pears and sit them on a plate or wire rack.
Return the wine mixture to the heat and bring to a simmer. Cook until the liquid is reduced by half and has formed a syrup. If it gets too thick, you can thin it out with a little water.
To serve the pears, place each one upright on a plate and drizzle with a spoonful of the syrup. Garnish with some fresh, torn mint leaves and a scoop of vanilla ice cream or whipped cream. Enjoy!