- 2 Hungarian wax peppers, stemmed and coarsely chopped (seeds are good) (see Cooks' Note below)
- 1 1/2 cups fresh cilantro leaves (from one large bunch or two small ones)
- 1 1/2 cups fresh flat-leaf parsley leaves (from one bunch)
- 2 cloves peeled garlic
- 1/2 teaspoon kosher salt
- 1 teaspoon ground coriander
- 1 teaspoon ground cumin
- 1/2 cup extra-virgin olive oil
- 1 1/2 teaspoons sherry vinegar
- Combine all the ingredients in a blender and blend until very smooth. You should have a bright green emulsified sauce. Use immediately or cover and refrigerate in an airtight container for up to 5 days.