Bernardin Home Canning: Because You Can: Marmalade Prickly Pear

Ingredients

• 3 cups (750 ml) chopped seeded oranges (unpeeled)
• 1 cup (250 ml) thinly sliced seeded lemons (unpeeled)
• 4 cups (1 L) water
• 4 cups (1 L) chopped seeded peeled prickly pears
• 6 cups (1.5 L) granulated sugar