01 - Combine grape juice, sugar, cinnamon stick, star anise, cloves, vanilla bean or extract, and orange zest in a medium saucepan. Bring to gentle simmer over medium heat, stirring until sugar completely dissolves.
02 - Carefully add pear halves to poaching liquid, ensuring they are mostly submerged. Add a small amount of water if necessary to cover. Simmer gently for 20-25 minutes, turning pears occasionally, until tender but not falling apart.
03 - Lift pears from liquid using slotted spoon and transfer to a clean plate. Set aside while reducing syrup.
04 - Increase heat to medium-high and boil poaching liquid for 5-10 minutes, until slightly thickened and syrupy consistency is achieved.
05 - Strain syrup to discard spices and orange zest. Return pears to warm syrup or arrange on serving plates. Drizzle with warm syrup and garnish with fresh mint leaves. Add whipped cream or vanilla ice cream if desired.