Make your five-spice syrup by adding 1 teaspoon of five-spice powder to a saucepan over medium heat. After a few seconds, as soon as the spices become fragrant, add 1 cup of water, 1 cup of sugar, and stir. Bring the mixture to a boil, immediately reduce heat to low, and let simmer for 5 minutes. Remove from heat and let cool completely, then strain through a fine mesh strainer. Store in the refrigerator.