In a small saucepan, combine turmeric and cardamom with 2 cups water and bring to a boil. Simmer for 10 minutes, then remove from heat. Strain the liquid through a fine sieve, and add 2 more cups water.
In a small bowl, whisk lemon juice and honey to combine, then add to turmeric mixture. Chill. Serve over ice. (Recipe #851)