In a saucepan or pot, add the dried hibiscus flowers and water over high heat and bring to a boil.
Lower the heat to medium and simmer for 10-15 more minutes, then turn the heat off.
Now, to strain the tea, set a fine-mesh strainer over a large bowl or pot. Pour the tea through the strainer and discard the hibiscus flowers.
Stir in the sugar until completely dissolved, then let it cool completely.
Pour the tea into a bottle using a funnel, then chill until cold and serve. Enjoy!
Notes
I highly recommend using the right hibiscus petal to water ratio, I usually use 1 tablespoon of dried hibiscus petals for every cup of water. This is the exact right ratio for the best taste.