You can find dried hibiscus flowers at Central Market, Whole Foods, most HEBs, Mexican grocery stores, and health food stores, or you can order it from MexGrocer.com or the Fredericksburg Herb Farm (800/259-4372; www.fredericksburgherbfarm.com). Yield: 20 servings.
About 7 qt. water, divided
3/4 c. dried hibiscus blossoms
1/2 c. to 1 c. sugar
Bring 6 qt. water to a boil. Add hibiscus blossoms, remove mixture from heat, cover, and steep about 30 minutes. Strain mixture, discarding blossoms; add about 1 qt. water, or enough to make the liquid a deep rose color. Add sugar to taste. Chill well. Serve over ice, adding a slice of lime to each glass.
From the July 2005 issue.