In a large pot or slow cooker, combine the cranberry juice, apple juice or cider, and fresh or frozen cranberries. Add the lemon slices.

Place the star anise, cinnamon sticks, allspice berries, cloves, cardamom pods, and nutmeg into a square of cheesecloth. Gather the edges and tie it securely with kitchen twine to make a spice bundle.

Add the spice bundle to the pot and simmer on medium low (or high in slow cooker until simmering, then reduce to low.)

Simmer gently for 45–60 minutes, allowing the spices and fruit to infuse the cider with flavor.

Taste and adjust the flavor as needed — add more lemon for brightness or simmer longer for a stronger spice profile.

Remove the spice bundle and lemon slices. Strain the cider if you prefer a clearer drink.

Serve warm in mugs. Garnish with a few fresh cranberries or a cinnamon stick if desired.