Harry Potter Pumpkin Juice

Bahan-bahan (4 porsi)

• 1 (15-ounce) can pumpkin puree, (about 1 ¾ cups)
• ½ cup water
• ⅔ cup granulated sugar
• 1 ½ teaspoons pumpkin pie spice
• 4 cups apple juice
• ½ teaspoon vanilla extract