01 - Combine grape juice, sugar, cinnamon stick, star anise, cloves, vanilla bean, and orange zest in a medium saucepan. Bring to a gentle simmer over medium heat, stirring constantly until sugar completely dissolves.
02 - Carefully lower pear halves into the simmering liquid, ensuring they are mostly submerged. Add a small amount of water if needed to cover. Simmer gently for 20-25 minutes, turning pears occasionally, until tender but still holding their shape.
03 - Lift pears from the liquid using a slotted spoon and transfer to a plate. Increase heat to medium-high and boil the poaching liquid for 5-10 minutes until reduced and slightly syrupy.
04 - Discard spices and orange zest from the reduced syrup. Return pears to the warm syrup or arrange on serving plates and drizzle with syrup. Garnish with fresh mint and a dollop of whipped cream or scoop of ice cream if desired.