Mesclun is a stylish array of designer greens. The mixture, which got its start in restaurants, varies depending on the season and the supplier but typically consists of arugula, Frisee (a slender, spiky member of the chicory family), oak leaf lettuce, radicchio and other baby greens.
Look for tender, crisp leaves with no sign of wilting.
Taste depends on the mix but is usually on the bittersweet side.
Use a handful with regular greens for an interesting flavour and texture contrast.