3 cups water
3 cups peeled, diced sweet potato
1/4 cup julienne-cut peeled fresh ginger
2 tablespoons sugar (or not)
3/4 teaspoon salt
cilantro or chives for garnish
1. Bring water to a boil in a large saucepan. Add remaining ingredients. Cover, reduce heat, and simmer 30 minutes.
2. Place half of sweet potato mixture in a blender; process until smooth.
3. Return pureed mixture to saucepan; cook over medium heat until thoroughly heated.