01 - Combine the grape juice, sugar, cinnamon stick, lemon zest, and vanilla extract in a large saucepan. Bring to a gentle simmer over medium heat, stirring until the sugar dissolves completely.
02 - Add the pear halves to the simmering liquid. Reduce heat to low, cover, and poach for 20–25 minutes, turning occasionally, until the pears are tender but maintain their shape.
03 - Using a slotted spoon, carefully transfer the tender pears to a serving dish, leaving the poaching liquid in the saucepan.
04 - Increase the heat to medium-high and simmer the poaching liquid uncovered for 5–7 minutes, until slightly reduced and achieves a syrupy consistency.
05 - Pour the warm reduced syrup over the pears. Allow to cool to room temperature or refrigerate until chilled. Serve with a drizzle of grape syrup and garnish with fresh mint, whipped cream, or vanilla ice cream if desired.