Blend all ingredients in a blender, adding a bit of water as necessary to make a paste:
3 cups chopped coriander leaves (cilantro) 5 green chiles 1 teaspoon ground corriander 1 teaspoon ground cumin 3 tablespoons lemon juice 1 clove garlic, chopped salt to taste (optional)
This makes about a dozen or two small servings. You should store it in jars in the refrigerator, preferably letting the flavors mingle for a few hours or days before using. It's also fine right away, though.