Sauteed Swiss chard with onion, garlic, jalapeno, and olives is a fitting accompaniment to fish, chicken, or pork. The winelike hues of Kalamatas, which are cured in red-wine vinegar, stand out in this verdant dish.
Don't worry if your pan seems overcrowded with the chard; it will quickly wilt and lose most of its volume as it cooks. Cooking the stems a bit longer than the leaves will ensure that they become perfectly tender. If you prefer, seed the jalapeno pepper before using.