Put the cilantro and chili in the contain of an elecrtic blender with 3 tbs water and blend until you have a smooth paste.

In a non-metallic bowl, combine the yogurt, salt, pepper, cumin, lemon juice, and paste from the blender. Cover and refrigerate until ready to use.

To Serve: Bring the cooled bowl to the table. People should take just a tablespoon at a time.