Courtesy of Epicurious
1/4 cup fresh cilantro leaves with tender stems, divided
4 radishes, trimmed, chopped
2 spring onions or 4 scallions, white and pale-green parts only, thinly sliced
1/2 Serrano chili or jalapeño, seeds removed if desired, finely chopped
2 tablespoons fresh lime juice
1 tablespoon vegetable oil
Chop cilantro and toss with radishes, onions, chili, lime juice, and 1 tablespoon oil in a medium bowl. Season with salt and pepper.