Zest the citrus fruits and juice them until you have 1 cup of juice.

In a medium saucepan over medium heat, combine citrus juice, honey, water, cinnamon, ginger, and vanilla extract. Stir well.

Simmer for 10-15 minutes until the mixture thickens slightly.

Strain through a fine mesh sieve into a bowl or jar and let cool before serving.

Serve over ice or warm; garnish with fresh citrus slices.