Combine the water and sugar in a small sauce pan. Heat the mixture over medium heat, stirring occasionally to help the sugar to dissolve. Once the mixture comes to a simmer, add the ginger and hibiscus and let it simmer for 3 minutes then remove it from the heat. Allow the syrup to steep for 30-60 minutes, tasting it to make sure you like the flavor. 

Strain out the ginger and hibiscus. Store your syrup in an airtight container in the fridge for up to 2 weeks.

To make a glass of the hibiscus ginger soda, add 1-2 tablespoons of the hibiscus ginger syrup to 8 oz of sparkling water along with a squeeze of fresh lime juice. Stir gently to combine, then add ice and garnish with borage flowers if you like.