⅓ cup rice vinegar ½ Anaheim pepper (1/4 cup), or 1 jalapeno, seeded and finely chopped 3 tablespoon olive oil 1 teaspoon lime peel, finely shredded ½ teaspoon sugar ¼ teaspoon salt ¼ tablespoon freshly ground black pepper 1 tablespoon chopped fresh herb (cilantro, basil, mint, or parsley)