It’s a perfect side dish for summer picnics since it’s an ideal accompaniment to grilled meats. The slightly acidic mustard dressing is a refreshing contrast to crunchy, colorful vegetables like red and yellow peppers, radishes, fennel, onion and cabbage.

Change the vegetables based on the season, keeping in mind that it is best to have a variety of colors, textures and flavors. Avoid any vegetable that will bleed, such as red beets, or that will overpower the other flavors in this dish. The key is to cut the vegetables in roughly the same size and shape.

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