1 TB tamarind concentrate (found at your local Indian Store)
1 large tomato, coarsely chopped
1/2 medium onion, coarsely chopped
2 cups loosely packed cilantro, thick stems removed
1/2 cup mint leaves
1 serrano chile, chopped
1/2 tsp salt
In a small bowl, whisk the tamarind concentrate with 2 TB water until smooth.
Put the tamarind, tomato, and onion in a blender and blend until smooth. Then add the rest of the ingredients and blend together.
This is a lovely condiment for Indian food, or just about anything else!