This tastes similar to cranberry juice.

2/3 cup dried red hibiscus blossoms
1-1/2 cups water
1/3 cup sugar

In a saucepan, bring the blossoms and water to a boil over high heat and continue boiling for 3 minutes. Add enough water to bring the total liquid to 4 cups; add sugar. Set the mixture aside for at least 4 hours or overnight. Strain the liquid into a glass pitcher. Add more sugar, if necessary.