Wash and chop the guavas into cubes.

In a large pot over medium heat, add the guavas, 5 cups of water, bay leaves, and cinnamon sticks.

Bring to a boil, then remove from heat.

Cover and let the mixture cool completely.

Once cooled, strain the mixture into a large bowl. (See notes if you prefer to keep some pulp.)

Add the remaining 1 cup of water, sugar, vanilla essence, mixed essence, and a dash of bitters.

Stir well to combine and adjust sweetness or flavor as needed.

Chill and serve over ice.